Please provide complete make and model names for you components.
I tried to look up the mobo and found this:http://www.xiew.com/product-detail/pcchips/m950/
The biggest issue may be that it only has PCI and AGP video slots, no PCI Express slots that have been a standard for 8 years now. But you said you have a PCI-e slot so I am confused and thus the request for more details.
For more info on PCIe cards see:http://www.upgradevideocards.com/pcie.html
The mobo linked above also has only the slower DDR memory. Now DDR2 is outdated and new systems have DDR3.
Please provide make and model on mobo, video card, memory, cpu, and psu.
You can also find more information about identifying system requirements when upgrading a video card at:http://www.upgradevideocards.com/criteria.html