Advice on this cheap amd build

Antec Three Hundred Black Steel ATX Mid Tower Computer Case - Retail 59.99
Western Digital Caviar SE WD1600AAJS 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive - OEM 54.99
ASRock A780LM AM2+/AM2 AMD RS780L (760G) Micro ATX AMD Motherboard - Retail 69.99
hec HP585D 585W ATX12V Power Supply - No Power Cord - OEM 29.99
Logitech S-220 17 Watts 2.1 Multimedia Speaker System - OEM 39.99
Logitech 967973-0403 Black PS/2 Standard Deluxe 250 Desktop - OEM 16.24
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Retail 68.99
AMD Athlon 64 X2 5200+ Brisbane 2.7GHz Socket AM2 65W OEM 55.99
COOLER MASTER R4-S2S-124K-GP 120mm Case Fan - Retail 14.99
Hanns·G Hi-221DPB Black 22" 5ms Widescreen LCD Monitor - Retail 179.99

Will be buying dvd drive from local store.

Total Cost - 743.36

How does this look?

Or would it just be better to go with a Dell prebuilt?

a prebuilt? eeek! never.


you have designed a last generation am2+ sys (=old)

better do a new gen AM3 sys w ddr3 for about same price.

Look at "Phenom II" 550 x2, or "Athlon II" 250 series.
on
Gigabyte 770, or 790GX chipset mobo (onboard video) (read specs)
with
2x2 gig DDR3
.
The rest is not bad.
But for the $550ish dollars in the case section, you can get newer with future upgrade options, and faster perf.
DDR3 prices are more competitive now.
You don't need to buy a separate heatsink - it's included stock.
And you can probably get a case/PSU combo. A case is just a bucket.
I am not a fan of asrock - and you want an AM3 MOBO.

There are more informed ways to go cheap.
Biostar mobos have a lot of fans.

Other people can also suggest stuff - but that's my bit - basically I think you are designing a waste of money with a new am2+ system.
If you have an existing AM2+ sys, then you can simply drop in an AM3 cpu (backwards compatible) = done. But to go and buy an AM2+ = wrong - buy a "socket AM3" mobo and build on that new foundation with a future. Ask at amdzone.

prebuilt? - you are talking to the wrong guy - it's an investment in compromise and cheezee - not for me. You need to research more. It's not ez; but it's your money, and people can help.