Bonjour,
Il y a les étapes à suivres dans le fichier readme.txt
Un petit copier/coller de ce fichier:

For Windows Vista you must use the install_vista.vbs to install LaTeXDraw;
this script activates the "run as administrator" feature in order to install
files in protected directories such as "Program Files". It will ask you your password.

If you want to launch the installer in a console, the command is "java -jar installer.jar".

The shared templates is:
- for Unix, /usr/share/latexdraw
- for Mac OS X, /Users/Shared/latexdraw
- for Vista, ProgramData\latexdraw
- for other Windows, All Users\Application Data\latexdraw

For Linux, a script will be created in /usr/bin to launch LaTeXDraw (needs to be root).
No shortcut is created for Windows.

The first execution of LaTeXDraw will create the profile of the current user in:
- for Unix, ~/.latexdraw
- for Max OS X, <user>/Library/Preferences/latexdraw
- for Vista, <user>\AppData\Local\latexdraw
- for other Windows, <user>\Application Data\latexdraw

Amusez vous:)