Help building a gamer under $600 or less

[EQTitan]

I have a P4 2.8 and 2x512mb DDR400 PC3200 2.5-3-3-7

Things I need:
Case w/ PS with at least 28a
Motherboard
CPU/GPU Fan
Video Card
Sound Card
HDD
DVDRW
DVDR
Ethernet

I'll be playing games like World of Warcraft (40/60man raids)
Unreal Tournment 2004
Battle field 2

Thanks