You would need new RAM, motherboard and processor.
Basically a new computer.
I've got a Packard Bell MC 1808, and it is pretty old, so I can see where this is going. But I really can't afford a new PC. I looked into upgrading, and found out that it was cheaper, but, from what you're implying, I really can't do that much. Thanks!
What would be the maximum budget you could handle? I can generally build stuff cheaper, but it will end up much slower.
It's okay, I just wanted advice. I'll probably save up for a PS3 if I have to change almost everything on my PC, but I'm not a mad gamer! Thanks for the help!