Welcome aboard! SHVI? Did I miss a new release or something?

Seriously though, I'm running Windows 7 with 2 ATI 5850's. If you have the cash, and the rest of your system is up to the task, these ATI cards (yes I'm an ATI fanboy!) have plenty of HP. The game runs and looks great. Also, don't overlook your PSU when upgrading to these high end cards. They need the juice. I learned the hardway what happens with an underpowered PSU.