Just copied and pasted what he wrote me:

My problem?

I run anything that has to do with the word "3d" bam!
CRASH and error messeges. The worst possible one that has happend was a bsod...

How it happend? how should i know i blame bill gates! i was playing doom last
night when it happend, i knew it had to be the pc scince me and my bro were
playing on a lan server and only my pc crashed... we kept trying bam only MY
GOOD BETTER???!?!?! supposly!!!! good!!! pc crashes on every single dam 3d
application.

What have i done? its now 2:14pm EST GMT -5:00 for the past 3 hours i been
updating all my drivers... even for my usb modem! i can see NOTHING has helped...
i ran driver cleaner to clean the drivers for my vid card and sfx card
and reinstalled the lastest drivers no luck...

Hell heres the messed up part... i ran dxdiag doing the 3d tests it crashes
now i know its real bad...

What am i doing now? installing custom drivers, idk wtf to do

Sys specs:

Microsoft Windows Xp Home Edition SP2 build 5400?
Intel 530J 3.5ghz cpu with ht tech (its overclocked... and its been that way for what 1 ? 2 years now?)
Asus P5P800S Motherboard
Xfx nvidia geforce 6600gt
soundblaster xfi - platnium
1 gb of ddr400 ram (running at 320mhz for the cpu overclock AND YES its been that way for 1 to 2 years now IT CANT be the prob!)

idk these below might not be important:

A wierd keyboard
some $5 usb mouse
Dell mv somthing monitor crt...
some speakers 2.1
a usb network printer
lan hub linking my other 2 pcs to this one for ICS and other stuff...
and a usb motorola sbv5120 modem


www.asus.com - motherboard
www.intel.com - cpu
www.nvidia.com - vid card
www.creative.com - sound card
www.motorola.com - modem
www.lexmark.com - printer
www.sakar.com - mouse
www.microsoft.com - direct x

dammit help me???

www.tweaksrus.com - the custom drivers im trying

First I would use no drivers except nVidia drivers.

http://www.nvidia.com/content/drivers/drivers.asp

Next I would try this card in another computer or another card is this computer.

Determining if this card has failed would be the first step.