Does PCI Express Graphics card always disable onboard video ?

[SingSing]

I have a PC with Intel 82045G express chip set that has onboard video.
I would like to get a second monitor on it.
But I read if I try to add a (PEG) PCI express graphics card, it will disable the onboard video.
Is this true for all onboard video ?

Does it means I have to get a old PCI video card to add a second monitor ?

(My Office PC use a dual head PEG, but that is expensive)

[edDV]

Look for an option in CMOS Setup.

[INFRATOM]

Windows Vista has this feature if there is conflict or some driver is corrupted it will disable it. If your new video card is capable of driving 2 displays and has output for it you are ok.

[dLee]

I don't think you can run two separate one-head video cards in one computer - or - onboard video and a PCI or PCIe card for dual monitor setup. I've never seen it (also never tried it), but I'm pretty sure it's a no go.

I've had good luck buying dual head cards that are one or two generations behind the expensive latest and greatest cards. Performance is good at a much lower price. I do find I have to dig a bit on Newegg.

[Nelson37]

Very rare that both will work. New card to drive two monitors relatively inexpensive.