Ideally, any discrete graphics card should allow you to have dual active display.
What is the current graphics card? and what is your power supply brand & model?
I built the computer so no name brand, I have a ATi VT-X1300 with 512mb
Your advice was good, I wenty to Fry's electronics and found a kid who directed me by my budget concerns to a XFX 6670.
It solved my problems.