Ati Radeon X700 Pro problem

hi,

i've recently bought a new computer, containing the following hardware:

• motherboard - ASUS A8V Deluxe 2000MHz
  system memory - 2 * 512Mb DDR-RAM Kingston
  processor - AMD Athlon 64 3700+ San Diego
  graphic card - Ati Radeon X700 Pro 256MB AGP 8x
  Hard Drive - 1 * 250Gb SATA Maxtor, and 1 * 40Gb Maxtor IDE

well, when i started my computer for the first time, and i install windows XP Pro, everything worked just fine. When i installed the motherboard drivers, it all worked just fine, but when i installed my graphic card drivers, my computer doesn't want to start up windows.

Does anybody knows what the problem is? i hope it has nothing to do with hardware that is not compatible with my motherboard or something

thanx in advance,
UnrealEd