I am sorry if this has been asked before, but most of this stuff goes way over my head, so I don't even know what to look for in a topic title.
I am running to Video cards, a nvida 6600, and a ATI POS 16mb card. The 6600 is hooked up to a PCIX16, and the ATI to regular PCI. I have each one hooked up to another monitor. Which was working up until I played a game, the 16mb card seems to be taking over

My 6600 was set up as the primary Monitor, and once I disabled my ATI card the game played fine. Now I have been to a couple of other forums in search of the answer and It seems that I need to do something with my Bios in order to make the 256 my "main" or first monitor. I was wondering if I could get some help, the 6600 even shows up as display 2 in dxdiag. If you need any specs or anything, just ask, I have no idea what information to give.