Are these comp components compatible?

Get 4GB of DDR2-800 instead. And change 9600 for Radeon 4850.

Pay less for 2x2 GB of RAM after rebate, this very good quality DDR2 800 1.8v Mushkin
http://www.newegg.com/Product/Prod [...] 6820146731
You're picking a motherboard that supports crossfire, but using a NVidia graphic card, change to this ATI HD4850 that you can run crossfire with in the future if you choose. It's $30 more expensive, but worth the price.
http://www.newegg.com/Product/Prod [...] 6814102770
The OCZ is a decent power supply, but more than you need for this system, you can drop down to a 600w model which is not only enough for your system, but is also enough power if you add another HD4850 in the future for crossfire. The money you save will pay for the 4850 over the 9600GT
http://www.newegg.com/Product/Prod [...] 6817341010
With these changes you get a much better graphic card, more and better RAM, keep the chance of a future upgrade to crossfire open and have a good enough power supply for the whole system, all at the same price as the original spec.

damn, my apologies, that P45 motherboard is not crossfire compatible.
Go with this Biostar at about the same price
http://www.newegg.com/Product/Prod [...] 6813138123
or this Foxconn at $110
http://www.newegg.com/Product/Prod [...] 6813186148
if you can afford it, Asus or Gigabyte would be a better choice. $135
http://www.newegg.com/Product/Prod [...] 6813128344
$139
http://www.newegg.com/Product/Prod [...] 6813131299
Sorry for screwing up on your motherboard choice earlier.
This Antec is a nice case and with free shipping is actually cheaper
http://www.newegg.com/Product/Prod [...] 6811129042

I've had good luck with Biostar motherboards and bad luck with my Asus boards, many other people don't care for the Biostars and love the Asus boards. According to reviews Asus seems to have done a good job with their P45 mobos.