I've been doing a lot of reading and this is what I came up with for a budget of about $1000 - $1200. I'm willing to overclock if I need to, but based on what I've read about these parts I don't think it'll be necessary, not yet. If I missed something or I need a change, please let me know.
Case: Antec Solution SLK3000-B Black
Motherboard: DFI LANPARTY UT nF4 Ultra-D ATX
Processor: AMD Athlon 64 3700+ 1GHz FSB Socket 939
Video Card: eVGA Geforce 7800GT 256-P2-N515-AX
Memory: OCZ Value Series 1GB (2 x 512MB) 184-Pin DDR SDRAM
Hard Drive: Western Digital Caviar SE16 250GB 3.5" SATA 3.0Gb/s
DVD Drive: NEC Black IDE/ATAPI DVD Burner
Power: Antec TruePower 2.0 TP2-550 EPS12V 550W
Keyboard/Mouse: Microsoft Black Wired Keyboard
Monitor: ENVISION EFT920 Silver 19" Pure Flat CRT
Case: Antec Solution SLK3000-B Black
Motherboard: DFI LANPARTY UT nF4 Ultra-D ATX
Processor: AMD Athlon 64 3700+ 1GHz FSB Socket 939
Video Card: eVGA Geforce 7800GT 256-P2-N515-AX
Memory: OCZ Value Series 1GB (2 x 512MB) 184-Pin DDR SDRAM
Hard Drive: Western Digital Caviar SE16 250GB 3.5" SATA 3.0Gb/s
DVD Drive: NEC Black IDE/ATAPI DVD Burner
Power: Antec TruePower 2.0 TP2-550 EPS12V 550W
Keyboard/Mouse: Microsoft Black Wired Keyboard
Monitor: ENVISION EFT920 Silver 19" Pure Flat CRT