ok my os is win xp pro sp3. and i have a amd xp 2000+ 1.7ghZ. i have a geforce 6200 256 mb agp 8X. and i cant change the agp speed in bios. i have awardbios phenix. and i go to the menu and i go to advanced chipset config and i go to the agp settings and all i see is agp apture size and the defult was 64mb and i set it to 256mb. please give me any advice my agp speed now is 2x but the max is 4x and i cant change it. please