Dual setup doesn't work very well for games However if you are multi tasking it is very handy. I used to have Outlook on the left monitor, and the net on the right monitor

You'll need an AGP graphics card, with either dual vga outports, or a dvi and vga out put, then get a dvi-vga convertor.

I maintain not to buy pc componants off ebay, but if you must, then try and source a 7600gt or other mentioned card.

www.ebuyer.com if you're gonna do it right tho imo.