STANDARD VGA Driver is just that a a standard VGA driver. Nothing special.
It doesn't matter what resolution or number of colors, it has to with the driver.
In a nut shell and in plain english. Unload every driver from your computer. Shut down your computer and install your newvideo card. When you reboot Windows XP, 2000 and I think 98 will automatically install a new driver for you. Most likely it will be the generic STANDARD VGA driver. It is limited to 640 x 480 - 256 colors in 98 and 800 x 600 - 16K in XP (depending on your monitor and video card). Then install the graphic card drivers (either newones from the 'net or the ones supplied to you on disk or CD).
Soyo Dragon Ultra Platinum Edition powered by a P4 3.06GHz w/HT @ 533FSB
ATI Radeon X800Pro 256DDR <---Yeah!!! I finally got it!!!
1024MB PC3200, Creative Audigy LS, 2 x 40GB = 80GB RAID 0
Windows XP Pro, DOOM 3, CS, UT2004, BF1942 RtoR, CNC Generals
Finished Half-Life 2!!!!!!!!!!