I have an ASUS P4G8X motherboard with an Intel P4 3.06 GHz processor,
1 GB of Mushkin PC2100 memory and a GeForce 4 5600 256 MB video card.
I want to squeeze a little more life from this system before returning
to the bleeding edge. My immediate problem is that the video card
will not handle The Elder Scrolls: Oblivion and I am contemplating the
installation of an XFX GeForce 7800 GS card to resolve the problem.

Will this system handle the new video card and, if so, are there
issues that I might need to address?

TIA.