Lian Li V SILENT PC-V1100 Silver Aluminum ATX Mid Tower Computer Case - Retail Model #: PC-V1100 - $225.00
ASUS A8N-SLI Premium Socket 939 NVIDIA nForce4 SLI ATX AMD Motherboard - Retail Model #: A8N-SLI Premium - $179.00
eVGA 256-P2-N538-AX With Battlefield 2 Bundle Geforce 7800GTX 256MB GDDR3 PCI Express x16 Video Card - Retail Model #: 256-P2-N538-AX - 594.00
PC Power & Cooling 510 SLI-PFC ATX12V 510W Power Supply - Retail Model #: 510 SLI-PFC - $229.00
2 Crucial Ballistix 1GB 184-Pin DDR SDRAM DDR 500 (PC 4000) Unbuffered System Memory Model BL12864L503 - Retail Model #: BL12864L503 - $356.00
AMD Athlon 64 3700+ San Diego 1GHz FSB Socket 939 Processor Model ADA3700BNBOX - Retail Model #: ADA3700BNBOX - $323.00
Total: $1,906.00 USD All prices are from newegg.com
Forgot the heatsink and fan. Get a Thermalright XP-90 and a highspeed panaflo or delta fan and you'll see idle temps at low 30s and load temps around low 40s, this with artic Silver 5 of course.
You still have about 600.00 left from your budget for a monitor and keyboard. If I was to do it all over again, I would have gone with everything up top. The PSU is the same one that alienware uses. Try building the same system from Alienware and I guarantee you it comes out to hundreds more. I chose 2X1GB sticks cause BF2 needs it and since its a gaming computer, chances are you'll be playing Battlefield 2.
I'd build it, you learn alot from building it yourself and you get a sense of pride with it also.
I have a similar system build in my sig. Check my 3DMark05 score I doubt there's a pentium system clock for clock that can score the same
Just did a quick search for you on 3Dmark05 scores
Closes P4 system, running at 4GHz and mine is running at 2.8GHz.
http://service.futuremark.com/compare?3dm05=1007374
If you look through the site, almost all P4s need to run over 3GHz, to compete with a 2.89GHz AMD64.
Yea I know 3Dmark is just a benchmark, but alot of users here will tell you, in real world testing, AMD64s will outperform P4s.