wetcat, 512MB isn't really enough if he wants to do video editing.
He never said anything about gaming, so why does he need a 6800GT? Sure I love mine, but if you arent gaming it isnt worth spending the premium price when a 9800pro is half the price and more than enough for most people.
Rather than spend $400 on a card, spend $200 and put the other $200 into an A64 and/or RAM.
All that being said, if he isn't gaming and wants to get into movie editing, he may wanna think about an intel. yes I know, i love AMD, but my system is for gaming.
Let's try something like this...
CASE - Antec Life Style case w/ 380W PS - $99
DVDRW - NEC 8x Dual Layer DVD+/-RW - $77
HD#1 - 120GB Western Digital 7200RPM 8MB cache (IDE) - $84
HD#2 - 36GB Western Digital 10000RPM Raptor - $118
KEYBOARD/MOUSE - Logitech Wireless Duo - $69
RAM - 2x Mushkin 512MB PC3200 - $158
MONITOR - Samsung 170N 17" LCD - $369
MOBO - Asus P4C800 (875 chipset) - $160
CPU - P4C 3.0Ghz - $223
SPEAKERS - Creative Labs SBS450 4.1 speakers - $43
VIDEO CARD - MSI ATi 9800pro - $197
TOTAL (w/ shipping from newegg) - $1652
You could shave a little off by getting a cheaper keyboard combo or getting a 2.4 or 2.8 CPU.