well, can u wait a couple of months, coz for that price, in july u can get a quad core. and ur memory and ur hard drive link dont work.
if u cant wait , then here are my suggestions.
u should consider the e6320 because it is almost the same as the e6600 but is a bit cheaper and overclocks really well.
Newegg.com - Intel Core 2 Duo E6320 Conroe 1.86GHz 4M shared L2 Cache LGA 775 Processor - Retail
i dont know anything about that memory, but i wouldnt recommend it, u should go with the gskill hz
Newegg.com - G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail
go with a gigabyte ds3 mobo or a msi sli-fi, they are cheaper and overclock really well, and perform really good for their cheap price.
Newegg.com - GIGABYTE GA-965P-DS3 (rev. 1.3) LGA 775 Intel P965 Express ATX Intel Motherboard - Retail
or
Newegg.com - MSI P6N SLI-FI LGA 775 NVIDIA nForce 650i SLI ATX Intel Motherboard - Retail
go with this psu, i dont think it will dissapoint u.
Newegg.com - Rosewill RP550-2 ATX 2.01 550W Power Supply 115/230 V CSA, CB, TUV, FCC, UL - Retail
go with this video card, or bump up to a 640 mb one if u have more cash.
Newegg.com - EVGA 320-P2-N811-AR GeForce 8800GTS 320MB 320-bit GDDR3 PCI Express x16 HDCP Video Card - Retail
i really like this case, but its just IMO, choose which ever one u like
Newegg.com - NZXT LEXA-NP Black/ Silver Aluminum Construction Plastic Front Panel ATX Mid Tower Computer Case - Retail
this is a good cd/dvd burner
Newegg.com - SONY NEC Optiarc Black 18X DVD+R 8X DVD+RW 8X DVD+R DL 18X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2M Cache E-IDE/ATAPI DVD Burner - OEM
these are only my opinions, and do what u think would be best
the total comes to about 880$
good luck