Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129021
Nice choice, probably the best case available that's not retardedly priced
Processor
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115026&Tpk=Qx6850
Enjoy your HUGE waste of money and your massively idlecores. By the time applications and games arrive that can take advantage of four (or more than 2) cores, today's quad core CPUs will be vastly obsolete. Honestly, by the time such applications exist that they'll be able to usefully utilise all of the power, we'll be on 8+ core systems and Windows 7. Not to mention you made a horrible choice:
1) 65nm, intel has moved to 45nm
2) No matter how hard you try you will ridiculously underuse it
3) If you're going to fall for the hype and think you need 4 cores now, just get a Q6600.
4) Get something like
this instead and save yourself a tasty $750 for the same percieved performance. Send it to me =)
Mobos
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131237
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128082Vid Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130319
ATI is usually full of AIDS, but if you wait for the son to launch, 4xxx series, <3. Otherwise fine choice I guess. If you were seriously planning to couple this card with that CPU, I have to comment that your brain is definitely alot more empty than your wallet.
HDD
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136012
Meh I guess, could just get some cheaper drives and RAID them though =x
2GB of DDR3
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145181
DDR3 is new technology and as it is now, is still outperformed by DDR2. PC2-8500 DDR2 ram will outperform PC3-8500 DDR3 ram. The DDR2 initial standard timings are 5-5-5-15. As DDR2 has been around for ages the standard has not only been reached, but passed, you can get DDR2 even faster than this. DDR3's initial standard is 7-7-7-15, and this has not even been reached. The timings on your memory you linked are a whopping 7-7-7-21. Quit being HERF DERF DDR3 IS A HIGHER NUMBER THAN DDR2, BETTAR LOL?. Buy DDR2. the DDR3 extra performance you think you'll be getting does not exist yet.
Monitor
http://www.newegg.com/Product/Product.aspx?Item=N82E16824009124
You could use some of the $750 I saved you on your CPU and bump up this to a sexy dell panel or something
Soundcard
http://www.newegg.com/Product/Product.aspx?Item=N82E16829102016
Creative
Honestly, your motherboard's built in will do fine.
Mouse
http://www.newegg.com/Product/Product.aspx?Item=N82E16826153026
Keyboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16823114004
meh meh don't care
OS
http://www.newegg.com/Product/Product.aspx?Item=N82E16837116196
Wise choice
Also lol'd @ nouman defending his e-peen