"Alienware" and "nice parents" don't fit into one sentence.
They put fancy names like Alienice, its just some simple aftermarket fans.
Lets not talk about how you got ripped off and talk about computers. My suggestion would be google. Google has everything you need to know. Read a few articles, then practice taking apart your computers and putting them back together. I only showed one of my computer-strupid friends how to put a computer together once, and they can do it themselves. That just goes to show how easy it is to build your own computers.
If you want good overclock, you want new ram, I know Alienware gives you crap ram. 2.2ghz is pretty fast for AMD processors. Get some faster ram and do some overclocking, You can pull 2.8ghz easy.
Your videocard should be fine. It is natural to have FRAPS lag your games. The problem is, windows is crap in itself, there are many things you need to tweak to get your computer running as fast as it could possibly be.
G. Skill 4GB(2x2GB) DDR800
eVGA 8800GTS 320MB
super pi: 1m=20s