Thanks for that. I have a Pentium Dual-core E2160, which runs at 1.8ghz. I am aiming to overclock it to 2.7ghz, once I get some DDR2. That is why I have the good cooling. The board is fairly good overclocking, atm I'm just taking care of afew bios issues before I start.

My DVD drive is white because my previous case was white, didn't get round to replacing it.

My gpu can play some games, it managed to hit 22fps for Bioshock at 1024x768. And it runs smothly on fairly older games. Might buy a 8800 GT 512MB at the end of the year, if it gets cheaper.

I have 2 psu's lying around, the old one and a "besta 550W", which I replaced with the old one after concerns it was abit dodgy and could surge.

Since I own both and a surge protector (the 4yr old 250W one) and this new one:New Computer PC 550W ATX Power Supply Silent Dual Fan - eBay Standard ATX, Power Supplies, Components, Upgrades, Computers. (end time 14-Feb-08 14:17:02 AEDST)

Which one is better to use?

I'm pretty poor atm and I'm thinking of spending my next $100 on some DDR2-800 to help overclock. Can't really afford a new psu or hard drive when they fail (both 4 1/2 years old) I'll have to dig into my pockets, I'll just use it for as long as possible.