Grapics Crashing ever since I loaded SW 2011 sp2, No approved video driver for my hardware combination....HELP!!!

I need help, My grapics driver keeps crashing (usually while I am in the middle of creating a drawing . I had this problem with my system last year after loading  SW2010 onto my computer. It was not until several months later that they finally came out with a proper driver for my particular hardware combination and even then it was not exact.

Here is my  setup.

SW2011 SP2

Dell Precision T7400 Workstation with Dual Quad Cores

16GB RAM

Win7 x64

NVIDIA Quadro FX 5600 video card.

There is not even a Vista driver for this set up.

I did not notice this issue before I installed SP2. I did have issues like the screen becoming pixilated and black at times but never crashing and going to the dreaded blue screen.

The last time I got the blue screen was yesterday and the one thing is said that I was able to write down was the following message.

DRIVER_IRQL_NOT_LESS_OR_EQUAL

Not sure what to do.

Help Jeff Holiday.....LOL

SolidworksAdministration