Games not Working

Alright, /comp/ I have a huge problem.
I just bought a whole new computer.
I bought all the parts and built it myself.
It works fine for browsing internet, etc.

When I go to play my games, it has video 'glitches' in them.
All my drivers are up to date and all parts are new, what could be wrong?

And if you want specs - here they are.

MoBo: XFX 680i LT SLI MotherBoard
CPU: Intel Q6700 (not overclocked)
RAM: OCZ SLI-Ready Dual Channel 4096MB PC6400 DDR2 800MHz Memory (2x2048MB)
Graphics Card: Brand New [Just got in mail] XFX GeForce 9600 GT XXX Alpha Dog Edition 512MB GDDR3, PCI Express 2.0, SLI Ready

Why are my games acting retarded?
They get stuck and loop sounds like crazy.

Oops, forgot to include, I have Vista Home Basic, DX10

Oops, forgot to include, I have Vista Home Basic, DX10
Theres your problem right there

You really think so?
They were working before I put in Vista, you could be right...

http://img174.imageshack.us/img174/2089/specsdk4.jpg

samefag here;
I have SLI ready RAM, but I'm not 100% sure what to do with it.
I see options in the BIOS about like so;
SLI Ready Memory
[x] disabled
[ ] CPUOC 1%
[ ] CPUOC 2%
[ ] CPUOC 3%
[ ] CPUOC 4%
[ ] CPUOC 5%
[ ] CPUOC MAX%
[ ] Expert

What should I do?

For the love of buggery, delete Vista.

>>7
you're not always given xp drivers to go with your shiny new vista system.

>>8
OP Here
All my shit has XP drivers, getting XP tomorrow.
If that doesn't work, then I'll become an hero.