Budget Build Advice (sub $500)

I am beginning to order parts for my first ever build. I will be using it for gaming, ranging from WoW to BF2142 ect... So far I have bought:

CPU- AMD 5000+ Black Edition: http://www.newegg.com/Product/Prod [...] 2b%2bblack

Case- Antec NSK4480 w/ earthwatts 380W PSU:
http://www.newegg.com/Product/Prod [...] pk=NSK4480

I plan to buy:

Optical: a cheap dvd burner
HD: Western Digital Caviar SE
GPU: SAPPHIRE 100237L Radeon HD 3650 512MB DDR3 , or the very similar EVGA 8800GT
http://www.newegg.com/Product/Prod [...] 6814102725
RAM: mushkin 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) , +another 1gb stick of some kind (will be using 32bit windows xp)
http://www.newegg.com/Product/Prod [...] 6820146118

So im lacking a MB and cpu cooler. Id like to keep the MB under $80 and the cooler under $25. I plan on trying to overclock the CPU using its unlocked multiplier and keeping stock voltage ect (I've read I can get it to ~3.2 with only changing the multiplier).

What do you suggest for these parts? Any feedback will be appreciated.

I am building a similar system all from neweggs
SAMSUNG 20X DVD±R DVD Burner Black SATA Model SH-S203B - OEM $27

Western Digital Caviar SE WD1600AAJS 160GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM $45

ECS Geforce6100PM-M2 AM2+/AM2 NVIDIA GeForce 6100 Micro ATX AMD Motherboard - Retail $50

EVGA 512-P3-N800-AR GeForce 8800 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail $160

G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-2GBNQ - Retail $45

AMD Athlon 64 X2 5400+ Brisbane 2.8GHz Socket AM2 65W Dual-Core Processor Model ADO5400DOBOX - Retail $87.5

Antec NSK4480 w/ earthwatts 380W PSU $70

shipping is about $40 so total is about $524.5
You could upgrade the harddrive if you want CPU is not the best, but pretty decent for the price and motherboard is okay for the price too.

P.S. don't compare HD3650 with 8800GT

Never ever buy an ECS motherboard. They are terrible, one of the worst in the industry.

The motherboard I would go is http://www.newegg.com/Product/Prod [...] 6813131273 for $90

OR http://www.newegg.com/Product/Prod [...] 6813128090 Same price

I was planning on getting an atx sized motherboard. Is there any reason other than those particular models/prices that you suggest micro atx?

Also, I am confused whether it is a motherboard specific feature to be able to adjust cpu multiplier? I know the black edition CPU is special because it has an unlocked multiplier, but do I also need to make sure the motherboard allows that adjustment?

thanks again for the feedback

Are there any particular chipsets or brands I should avoid in this price range and socket because they don't overclock?

Also, people are saying 3850 on the video card, look at the 8800 gs superclocked cards, those are supposed to run with a 9600gt and maybe a 3870 according to benchmarks.