Wow! 256 won't even RUN most games.
If you have 256 MB Video Memory, you must be running intel integrated graphics. Which is... pathetic at best.
I looked online to be sure that CPUZ wasn't mistaken, but NVIDIA GeForce 8500 GT is not at all a good GFX card.
Most games won't even run at .256 GB of video memory. You can literally get almost anything else but that if you want to see improvement.
I'm no good with graphics cards, and I don't know what slots your motherboard has.
Hopefully OG will show up to show me the error of my ways.