Problème page d'accueil internet lo.st

Bonjour,

Comme beaucoup de monde, lorsque j'ouvre la page d'accueil d'internet, c'est le site lo.st qui apparait. De plus, j'ai des ouverture intempestive de fenêtres internet.
Je suis venue sur ce site, j'ai téléchargé et exécuté AD-R.exe.
Ci-dessous le rapport du scan.
Questions : Puis-je passer au nettoyage sans rique ?
Merci par avance pour vos réponses.

Isabelle

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======= RAPPORT D'AD-REMOVER 2.0.0.0,D | UNIQUEMENT XP/VISTA/7 =======
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Mis à jour par C_XX le 19/05/10 à 19:20
Contact: AdRemover.contact@gmail.com
Site web: http://pagesperso-orange.fr/NosTools/ad_remover.html
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Lancé à: 10:05:44 le 08/06/2010 | Mode normal | Option: SCAN
Exécuté de: C:\Ad-Remover\ADR.exe
SE: Microsoft Windows XP Édition familiale (Service Pack 2 - X86)
Nom du PC: ISA
Utilisateur actuel: FRAPPEXPRESS
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============== ÉLÉMENT(S) TROUVÉ(S) ==============
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Service: *Application Updater*
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C:\Documents and Settings\All Users\Application Data\iWin
C:\Documents and Settings\All Users\Application Data\Trymedia
C:\Documents and Settings\FRAPPEXPRESS\Application Data\EoRezo
C:\Documents and Settings\FRAPPEXPRESS\Application Data\ItsLabel
C:\Documents and Settings\FRAPPEXPRESS\Application Data\Search Settings
C:\Program Files\Application Updater
C:\Program Files\AskPBar
C:\Program Files\AskSBar
C:\Program Files\GamesBar
C:\Program Files\Mozilla Firefox\extensions\searchsettings@spigot.com
C:\Program Files\Search Settings
C:\Program Files\SpiderMessenger
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HKCU\Software\EoRezo
HKCU\Software\ItsLabel
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{0579B4B1-0293-4d73-B02D-5EBB0BA0F0A2}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{0A94B111-4504-4e26-AB05-E61E474AA38B}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{64F56FC1-1272-44CD-BA6E-39723696E350}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{ADE49752-DBBC-43A3-9498-379A82F574BF}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{E312764E-7706-43F1-8DAB-FCDD2B1E416D}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{F0D4B231-DA4B-4daf-81E4-DFEE4931A4AA}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{F0D4B239-DA4B-4daf-81E4-DFEE4931A4AA}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{F4D76F01-7896-458a-890F-E1F05C46069F}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{F4D76F09-7896-458a-890F-E1F05C46069F}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{0579B4B1-0293-4d73-B02D-5EBB0BA0F0A2}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{0A94B111-4504-4e26-AB05-E61E474AA38B}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{64F56FC1-1272-44CD-BA6E-39723696E350}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{ADE49752-DBBC-43A3-9498-379A82F574BF}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{E312764E-7706-43F1-8DAB-FCDD2B1E416D}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{F0D4B231-DA4B-4daf-81E4-DFEE4931A4AA}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{F0D4B239-DA4B-4daf-81E4-DFEE4931A4AA}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{F4D76F01-7896-458a-890F-E1F05C46069F}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{F4D76F09-7896-458a-890F-E1F05C46069F}
HKCU\Software\PopCap
HKCU\Software\Search Settings
HKLM\Software\Application Updater
HKLM\Software\Classes\CLSID\{0579B4B1-0293-4d73-B02D-5EBB0BA0F0A2}
HKLM\Software\Classes\CLSID\{0A94B111-4504-4e26-AB05-E61E474AA38B}
HKLM\Software\Classes\CLSID\{64F56FC1-1272-44CD-BA6E-39723696E350}
HKLM\Software\Classes\CLSID\{ADE49752-DBBC-43A3-9498-379A82F574BF}
HKLM\Software\Classes\CLSID\{B15FD82E-85BC-430d-90CB-65DB1B030510}
HKLM\Software\Classes\CLSID\{E312764E-7706-43F1-8DAB-FCDD2B1E416D}
HKLM\Software\Classes\CLSID\{F0D4B231-DA4B-4daf-81E4-DFEE4931A4AA}
HKLM\Software\Classes\CLSID\{F0D4B239-DA4B-4daf-81E4-DFEE4931A4AA}
HKLM\Software\Classes\CLSID\{F0D4B23B-DA4B-4daf-81E4-DFEE4931A4AA}
HKLM\Software\Classes\CLSID\{F4D76F01-7896-458a-890F-E1F05C46069F}
HKLM\Software\Classes\CLSID\{F4D76F09-7896-458a-890F-E1F05C46069F}
HKLM\Software\Classes\CLSID\{F4D76F0B-7896-458a-890F-E1F05C46069F}
HKLM\Software\Classes\EoRezoBHO.EoBho
HKLM\Software\Classes\EoRezoBHO.EoBho.1
HKLM\Software\Classes\Interface\{384FE458-A963-450D-9187-EEFF81913FD0}
HKLM\Software\Classes\Interface\{B0D071A1-36B3-4757-A126-14C89C56013A}
HKLM\Software\Classes\Interface\{D5A1EF9A-7948-435D-8B87-D6A598317288}
HKLM\Software\Classes\SearchSettings.BHO
HKLM\Software\Classes\SearchSettings.BHO.1
HKLM\Software\Classes\TypeLib\{13B1A411-66D8-49AC-BBC6-0102F0918AED}
HKLM\Software\Classes\TypeLib\{15D9CA76-F712-4548-B2A5-C67CD47AC47A}
HKLM\Software\Classes\TypeLib\{B4C656C9-F2E9-4E77-B3F4-443DF2BD778F}
HKLM\Software\Classes\TypeLib\{CD082CCA-086F-4FD8-8FD7-247A0DBBD1CC}
HKLM\Software\EoRezo
HKLM\Software\GamesBarSetup
HKLM\Software\ItsLabel
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0579B4B1-0293-4d73-B02D-5EBB0BA0F0A2}
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{64F56FC1-1272-44CD-BA6E-39723696E350}
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{ADE49752-DBBC-43A3-9498-379A82F574BF}
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{E312764E-7706-43F1-8DAB-FCDD2B1E416D}
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F0D4B231-DA4B-4daf-81E4-DFEE4931A4AA}
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F4D76F01-7896-458a-890F-E1F05C46069F}
HKLM\Software\Microsoft\Windows\CurrentVersion\Ext\PreApproved\{F0D4B23B-DA4B-4daf-81E4-DFEE4931A4AA}
HKLM\Software\Microsoft\Windows\CurrentVersion\Ext\PreApproved\{F4D76F0B-7896-458a-890F-E1F05C46069F}
HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\AskSBar Uninstall
HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\SoftwareUpdate_is1
HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\SpiderMessenger_is1
HKLM\Software\PopCap
HKLM\Software\Search Settings
HKLM\Software\Trymedia Systems
HKCU\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser|{F0D4B239-DA4B-4DAF-81E4-DFEE4931A4AA}
HKCU\Software\Microsoft\Internet Explorer\URLSearchHooks|{E312764E-7706-43F1-8DAB-FCDD2B1E416D}
HKLM\Software\Microsoft\Internet Explorer\Toolbar|{F0D4B239-DA4B-4DAF-81E4-DFEE4931A4AA}
HKLM\Software\Microsoft\Windows\CurrentVersion\Run|Eorezo
HKLM\Software\Microsoft\Windows\CurrentVersion\Run|SearchSettings
HKLM\Software\Microsoft\Windows\CurrentVersion\Run|Softwarehelper
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Application Updater\ApplicationUpdater.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Search Settings\FF\chrome\locale\en-US\searchsettingsplugin.dtd
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Search Settings\FF\components\SearchSettingsFF.dll
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Search Settings\FF\install.rdf
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Search Settings\SearchSettings.dll
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Search Settings\SearchSettings.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\SharedDLLs|C:\Program Files\Search Settings\SearchSettingsRes409.dll
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============== SCAN ADDITIONNEL ==============
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* Mozilla FireFox Version 3.5.9 (fr) *
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C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - browser.download.lastDir: C:\\Documents and Settings\\FRAPPEXPRESS\\Bureau\\SITE
C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - browser.search.defaultenginename: Yahoo
C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - browser.search.selectedEngine: Yahoo
C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - browser.startup.homepage: hxxp://y.lo.st
C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - browser.startup.homepage_override.mstone: rv:1.9.1.9
C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - keyword.URL: hxxp://fr.search.yahoo.com/search?fr=greentree_ff1&ei=utf-8&type=867034&p=
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TROUVÉ: C:\Documents and Settings\FRAPPEXPRESS\..\ifn4fxgz.default\prefs.js - user_pref("browser.startup.homepage", "hxxp://y.lo.st");
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* Internet Explorer Version 8.0.6001.18702 *
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[HKCU\Software\Microsoft\Internet Explorer\Main]
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Do404Search: 0x01000000
Enable Browser Extensions: yes
Local Page: C:\WINDOWS\system32\blank.htm
Show_ToolBar: yes
Start Page: hxxp://y.lo.st
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[HKLM\Software\Microsoft\Internet Explorer\Main]
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Default_Page_URL: hxxp://go.microsoft.com/fwlink/?LinkId=69157
Default_Search_URL: hxxp://go.microsoft.com/fwlink/?LinkId=54896
Delete_Temp_Files_On_Exit: yes
Local Page: C:\WINDOWS\system32\blank.htm
Search Page: hxxp://go.microsoft.com/fwlink/?LinkId=54896
Start Page: hxxp://go.microsoft.com/fwlink/?LinkId=69157
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[HKLM\Software\Microsoft\Internet Explorer\ABOUTURLS]
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Tabs: res://ieframe.dll/tabswelcome.htm
Blank: res://mshtml.dll/blank.htm
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========================================
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C:\Ad-Remover\Quarantine: 0 Fichier(s)
C:\Ad-Remover\Backup: 1 Fichier(s)
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C:\Ad-Report-SCAN[1].txt - 9023 Octet(s)
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Fin à: 10:27:21, 08/06/2010
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============== E.O.F - SCAN[1] ==============