If a little kid at the age of 6 eats 4 tubes of fluoride toothpaste, he or she will die.
Although I think after getting through half of a tube would make me too sick by that time.
I'm guessing you're on a budget?
First off, bump up your CPU to a Intel Core 2 Quad so you have at least a quad core CPU which can run the new games out there. 2 cores will bottleneck your system if you try to run new games on it.
And a reasonable price to performance card you can get for...