I just built up my new computer i am running a 2.4GHZ P4 w/ FBS of 800mhz on a BIOSTAR p4vtb800 board. Video wise i have a 8x AGP GEFORCE FX5200 w/128MB. i have a 512MB stick of PC3200 DDR from CORSAIR and my o.s. is WIN XP. my problem is i cant play most 3D games. i bought diablo wont play, command and conquer wont play, rouge spear wont play. the only game that would play was a flight sim game. ive tried other agp video cards from ati ive tried pci cards from nvidia and nothing changed with the cards. My father in law as the 2.4GHZ Celeron and can play all my games fine. Can anyone help me game agian.