$1000 should get you a pretty nice computer. It's not too bad to learn, just stick to good brands and Newegg because of their return policy. A lot of it is just putting stuff in the right place and not being careless. Just follow the instructions and you should be good to go...if all else fails, RMA it back to Newegg. Yeah you gotta pay return shipping in most cases, but it's a small price to pay for everything you learn.
Here's my recommendations for parts off the top of my head:
CPU: Core 2 Duo 6750 (250? iono)
Mobo: Asus or Nvidia (depending if you overclock or what not) (70 - 200+)
HDD: 320GB 7200rpm drive (100)
GPU: XFX/BFG/EVGA 8800GT (250)
Assorted Burners, media readers, etc (50)
Case: Antec Nine Hundred or the sleeker Antec P180 or P182 (super silent) - 100ish, maybe less maybe more, depending on the deals
Sound card: probably unnecessary
A lot of those numbers are probably off but you get the idea. that's about $700 or 800 for a real solid computer that'll last a while. It would cost in the 1k area prebuilt, I'd figure.