Update: First Build Ever Ultra Budget Gaming

Hi! Thank you to everyone who helped pick parts for my first build at:
http://www.tomshardware.com/forum/295972-31-first-build...

The computer is built! I visited a MicroCenter and actually got two different parts from the final build:
Asus M4A88TD-V MOBO
AMD Phenom x2 555BE

There was a CPU/MOBO deal where you get $40 off if you buy any of the two. So the price was the same as the original build, but with a better MOBO, and I would say a better CPU because I luckily have four cores =)


A COUPLE OF QUESTION:


WEI:
7.4 CPU
7.5 RAM
7.4 Graphics
7.4 Gaming Graphics
5.9 Primary HDD

Base score: 5.9
Is this score normal for SAMSUNG Spinpoint F3 HD502HJ 500GB? It's detected as IDE, so I tried to switch that to AHCI using:
http://www.tweakwin7.com/articles/44119/improve-sata-ha...
Didn't work. I got the same score.
As for the other scores, I don't know what average scores look like so it's somewhat meaningless to me. Are those numbers decent for what I bought?

Also for OCing: There are so many programs that automatically OCs my computer. Is tweaking from BIOS instead the best option? Also, say the GPU has its own OCing software. Should I use that, use software from my MOBO, or again use the BIOS? Not so sure where to start.

Again thanks for everything. So many question...answering one would be enough =)