I have recently had to replace a motherboard on one of our desktop computers(the one my wife uses) And the newer motherboard was kind of cheap as I was on a budget. I figured that it would at least be somewhat equal in performance to the one it was replacing as the PC is about 5 years old. (manufactured in 2004 or 5).
Since I don't want my wife and the whole family using my precious PC

Now after replacing the motherboard.. playing the games is impossible. I recieved many, many errors at the end of installation(of the earlier mentioned games) referring to insufficient video card or something and we cannot install the game..

(BY THE WAY, here are the specs to to NEW MOBO.. which is actually faster other than the Intel Celeron 2.66Ghz <-- other than the graphics)
AMD Sempron 3000+ 1.80Ghz with 2Gb RAM / ONBOARD GRAPHICS: SiS Mirage Graphics(SiS 761) Video Memory 32.0Mb
When I bought the mobo I didnt know how bad the graphics were...
Now, what I am wondering -
Is it possible to buy another (NICER) graphics card and install it in one of the PCI slots on the motherboard? If so, do I need to go with a certain brand or type of video card, or would Intels NVIDIA line work with my current chipset?
Any input on the type of video card I need to get would really be appreciated!!
Here is a photo of my motherboard incase it helps...
Thanks Bleepin' Community!!!