I have intel I7 core 930 @2,8GHz(8CPUs) RAM 12,0 GB Win 7 64 bit 2 grafic card 1. Geforce 9600 GT 2. Geforce 8400 GS.
First you should upgrade your RAM to 4 GB . and Grafics Geforce 9600 GT has 3 access, DVI, RGB and HDMI but you can use only 2 of them its impossible to use 3 at once I dont know why I use HDMI for TV and DVI for 1 monitor and second card Geforce 8600 GT has also 3 access , DVI,HDMI, RGB and I use for my 2 and 3 pc monitor HDMI and RGB.