Mountain Biking - Need Help Deciding Parts

I've decided to build my own bike, since i have a frame and BB already but i'm not sure on how to go about getting my parts. My budget would probably be around 500-600 dollars. Right now i already have a giant rincon so i can probably use it's wheelset and MAYBe the deraillers. Other than that, i ono what else i should get. I'll post a list here:

Bottom Bracket: Yes
Brake Levers: From Rincon?
Front Brake: Rincon?
Rear Brake: Rincon?
Cables: ?
Cassette: ?
Chain: ?
Crankset: ? (Definitely gonna need a new one)
F. Derailleur: Rincon?
R. Derailler: RIncon?
Fork: ?
Frame: Yes
Handlebar: ?
Headset: ?
Pedals: Rincon
Seat: ?
Seatpost: ?
Shifter: ?
Stem: ?
Tires: Rincon
Wheelset: Rincon

Get a new frame, to start out.

Hey dirtbike, one of us is a putz, I'm betting it's you. Doh didn't even mention what frame he has and you're only, clearly well thought out advice is to "get a new frame to start out"?

So unless you're clairvoyant, or Doh is planning to use the Rincon frame, which I don't think he is..... How about chilling on the better than thou crap and either offering informed advice or pounding sand..

*Edit* I took out the word jacka$$ and replaced it with putz. I felt guilty calling a 15yr old a jacka$$. I am keeping the pound sand part however as if he's grown enough to offer posts like above then he's old enough to learn how to pound sand!

I bought a new frame to replace my rincon frame already. So ya, not using my rincon frame.

For drivetrain stuff (and controls like shifters/cables and brakes), friends and I have been having a good time with SRAM x7,x9,and x0. Often these are cheaper than $himano options.

What sort of BB do you have? This will affect your crankset options.

As for fork, well that looks like the biggest single chunk of $$, and will depend a bit on your intended riding and your weight. See http://www.mtbr.com

For seat, seatpost, stem, & headset, I'd see what the discount online stores have to offer (and check mtbr for reviews), especially for their personally branded items. See http://www.nashbar.com, http://www.pricepoint.com, and http://www.performancebike.com.

Since you already found a frame, next should come fork, and then wheels. I believe JensonUSA has the Marathon S for 275, which is an excellent fork for the money. Wheels, Im not sure, but Ill bet phantomcow will chime in and help you out. As for drivetrain, I highly recommend SRAM. Maybe an X.7 set. Your best bet for alot of parts will probably be ebay for stuff like cranks and a stem.