Budget is around 1000 dollars, and this comes to around 1050.
Motherboard:
DFI LANPARTY DK P35-T2RS LGA 775 Intel P35 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813136043
CPU:
Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115037
GPU:
VisionTek 900244 Radeon HD 4870 512MB
http://www.newegg.com/Product/Product.aspx?Item=N82E16814129113
RAM:
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231122
PSU:
Antec TPQ-850 850W ATX12V / EPS12V Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371009
or
CORSAIR CMPSU-550VX 550W ATX12V V2.2 Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004
HDD:
Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM 16MB Cache SATA
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136218
CASE:
LIAN LI PC-61
http://www.newegg.com/Product/Product.aspx?Item=N82E16811112025
DVD Burner/Drive:
LG Black SATA
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136149
Motherboard:
DFI LANPARTY DK P35-T2RS LGA 775 Intel P35 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813136043
CPU:
Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115037
GPU:
VisionTek 900244 Radeon HD 4870 512MB
http://www.newegg.com/Product/Product.aspx?Item=N82E16814129113
RAM:
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231122
PSU:
Antec TPQ-850 850W ATX12V / EPS12V Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371009
or
CORSAIR CMPSU-550VX 550W ATX12V V2.2 Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004
HDD:
Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM 16MB Cache SATA
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136218
CASE:
LIAN LI PC-61
http://www.newegg.com/Product/Product.aspx?Item=N82E16811112025
DVD Burner/Drive:
LG Black SATA
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136149