Vu sur
http://www.virtualbox.org/wiki/User_FAQ :
* Poor graphical output in Windows 98 Unlike more modern systems, Windows 98 does not come with a driver which will work with the VirtualBox graphics card, so it falls back to using it as a 16 color VGA card. While Sun does not provide Guest Additions for Windows 98, the Display Doctor 7 Beta suite by the company SciTech does contain a driver which will allow you to use higher color and resolution graphics modes. Please note that neither Sun nor SciTech support nor accept liability for the use of this program.
Display Doctor 7 Beta requires activation codes to work. We understand that the free activation code for Display Doctor 6 also applies to version 7 Beta:
http://www.scitechsoft.com/ftp/sdd/regcodes.txt.
You might also want to look at the following site pointed out by users of VirtualBox, which also provides VESA drivers for Windows 98:
http://www.bearwindows.boot-land.net/vbe9x.htm. Please be aware that Sun provides this link in good faith, but cannot take responsibility for the site or the software which it refers to.
