Danase:
The key to determining what you want to build is what you are going to use the computer for and your budget. For my last build, I kind of wanted a machine that will last me a few years since I don't upgrade boxes that often and be able to handle whatever I dish out since I do things like tinker with Photoshop or make mixes.
To give you a rough idea, this is what my build consists of currently:
Abit KN-8 mobo: $82.99 (Price has dropped on Newegg)
AMD Opteron 165 (Denmark) processor: $327.00
Lite-On DVD RW w/LiteScribe: $45.99
Antec TP II 550 W power supply: $89.99
XFX 7900 GT PCI-X 16 256 MB Video Card: $299.00
Lite-On Combo Drive: $26.99
Case: $50 (Bought from a buddy of mine)
Mitsumi Floppy Drive: $7.99
Sound Blaster Audigy ZS 2 Platinum Sound Card: $100 (Bought from a buddy of mine)
Hard drives: I already had them lying around.
You are taking the best approach possible by asking questions here and talking with your friend. Everyone will be glad to help you.
