Building a new rig.

So... I may have asked this a while back, but now that things are settling down and Im going to actually have money to spend soon. I've realized, if I am going to continue PC gaming, I want to get a Fast Desktop.

Now I have known that possibley the best way to do such is build one yourself, I've read some articles and magazines and so far it seems putting one together is just a matter of some common sense, and some careful hands, and Im ready for the challenge. My plan is to part it out and build it piece by piece over maybe 6 months or longer. My question is two-fold..

1) What could I expect to spend on something that would crush just about any game out on the market right now but still be reasonably decently priced. Like around $2,000 USD.

2) Are there any REALLY in depth articles that show you what to grab first if your parting out, and give you some basic ideas of what does what compared to other similar products. (Better graphics cards for overall performance vs better cards with better AA qualities and such)

I think I know enough about PC pieces to have a grasp on what I basically should get, I'll just need a bit more in depth tutoring from you all out there.

I know that I dont want to skimp on my PSU first and foremost, but other than that its been a while so any helps appreciated. Thanks guys.

Casey