screen resolution

ey guys jsut a quick qn. ive got a d400 latitude dell laptop which i just formatted.
howveer i cant move the slider past less (640×480).
how can i change that?\\color quality is stuck on medium
Answer #1
Probably you are running ur pc without agp driver. Which os u r using ?
Answer #2
windows xp… alright ill try and obtain that agp driver! thanks