Hello
Like Joao said, the graphic driver for this unit is only available for Xp and W2k.
http://www.csd.toshiba.com/cgi-bin/tais/su/su_sc_modItemList.jsp
Well, you can check other Toshiba notebooks which have the same graphic card and try to download this driver.
You can also try to search on the European Toshiba website for the units with the same graphic card.
http://eu.computers.toshiba-europe.com/cgi-bin/ToshibaCSG/download_drivers_bios.jsp
Good luck
Bye