I just put this together for a friend and all went well. Here's the system. ASUS M2a-MVP MoBo Athlon 64 X2 6400+ CPU Vista Home Premium 64 bit 320 GB EIDE HDD 4 GB Ram Sapphire HD 2600 XT Graphics Card with 512MB GDDR3 Memory The Device Manager says all hardware is running fine. Here's the problem--- I went to install Codename Panzers game and I get this error... Fatal Error Sviewport;;Allocoffscreenbuffers; Createdepthstenciltexturefailed. D3DERR_Invalidcall Think the game just cant be run in Vista. It is an 2004 game. Runs fine on my XP system at home. I am stuck at work with a corprate filter so no game sites here. Maybe theres a Vista Patch on CDV's website Anway any help will be great.