CPU : Intel Core 2 Duo E6750 Conroe 2.66GHz 4M shared L2 Cache LGA 775 Dual-Core Processor $190
http://www.newegg.com/Product/...x?Item=N82E16819115029
If you plan to overclock, then go with the E4500 (2.0 Ghz, 11X multiplier, ~$130)
MOTHERBOARD: Gigabyte GA-P35-DS3R Rev. 2.0 LGA 775 Intel P35 ATX Intel Motherboard Retail $127
http://clubit.com/product_detail.cfm?itemno=A4830711
Superb on board audio with the ALC889A sound chip; thus, you will NOT need to buy an add on audio card. Make sure that you buy Revision 2.0 board, which eliminates parallel, serial game ports and replaces them with 4 additional USB ports (it has 8 USB ports on the I/O back panel)
MEMORY: Transcend 4GB(2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory $86
http://www.newegg.com/Product/...x?Item=N82E16820208353
Memory prices are at their lowest at this point in time. If you buy only 2GB now, you will have to pay a lot more for another 2GB in the future when you want to upgrade. Your best bet is to buy 4GB now.
PSU: Corsair CMPSU-450VX ATX12V V2.2 450W Power Supply $65 (after $15 Rebate)
http://www.newegg.com/Product/...x?Item=N82E16817139003
Reliable, high efficiency, quiet and made by a reputable company (Seasonics)
VIDEO CARD: BFG - NVIDIA GeForce 8800 GT OC 512MB Graphics Card $209 (after applying 12% off coupon at store)
http://www.bestbuy.com/site/ol...&cp=1&id=1190678470708
http://forums.anandtech.com/me...=2129414&enterthread=y
Best bang for the buck video card. This is a no brainer.
CASE: THERMALTAKE Soprano RS 101 VG7000BWS Mid Tower Case Retail $30 (after $30 rebate. Expire 12/17/2007)
http://www.zipzoomfly.com/jsp/...ctCode=10005889&ps=ho3
I just pick the cheapest case with decent quality. You can also go with the Antec Solo, which is a very popular case in the silent pc community.
CD/DVD BURNER: SAMSUNG Black 20X DVD+R 8X DVD+RW 12X DVD+R DL 20X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 20X DVD±R DVD Burner - OEM $34
http://www.newegg.com/Product/...x?Item=N82E16827151153
OS: Microsoft Windows Vista 64-Bit Ultimate for System Builders Single Pack DVD $180
http://www.newegg.com/Product/...x?Item=N82E16832116215
Don't forget that you need an OS. You can also pick Vista 32 bit or XP but keep in mind that those OS' will only see ~3.5GB of your memory.
MONITOR: Acer AL2216Wbd Black 22" 5ms DVI Widescreen LCD Monitor with HDCP support 300 cd/m2 700:1 $200
http://www.newegg.com/Product/...x?Item=N82E16824009094
If you want better image quality, go with the Samsung 226BW or HP W2207
Total: $1121