Myst wrote:
1) If your "not as smart when it comes to stuff like this" i would suggest buying your own computer rather than building one.
2) If your gaming buy a desktop PC. idk how many more times i need to say it to people.
As to what to look for:
CPU - Look for high Ghz and a large cache. No matter what people say the cache is more important than the Ghz, i.e. a 3Ghz CPU with a 6mb cache will be slower than a 2.4GHz processor with a 12mb cache. Also look out for intels new "i" series, they fucking rule.
Graphics card - If your going with ATI, the HD5700 series or higher will keep you going for a couple of years. As for nvidia i would say a GTX260+ will be good enough. However there new cards are coming out soon (might already be out idk).
RAM - Vista/7 can only handle 4GB of RAM. Anymore and you won't really see your performance jump that much.
Hard drive - 500GB+. But saying that i have a 250GB HDD in my PC at the moment and i get a 20 second boot-up time with windows 7.
A decent desktop PC pre-built that will last you 3-4 years should cost no more than £800 - £1000. Not including a monitor.
Well, depends. If you have a 20 inch or more, it might get tricky with the resolution of the games. ( You might have to lower 'em )
If you want a cheap, strong but hot card, you should think of the HD4870 or for 30 bucks more the HD4890.
And wait till march when the new GTX 480/470 series get out and have a look at the prizes.