My friend doesn't have a good computer and he loves nazi zombies.
Here is the "hack"http://pcsplitscreen.freehostia.com/Cod%20Split%20screen.htm
The second monitor is smaller so the resolution would be lower luckily. My graphics card is a GTX 275. Also, if you auto hot key the controls to my 360 usb controller it can actually work. I was thinking it would be quicker if I could put in my old radeon 4850 and dedicate it to the 2nd instance of the game running.
Thanks for the response though.