New Rig, Ordering ...Today?

Hey guys, I made a post earlier about a new rig for gaming. Only needed a few parts as I plan to salvage a case, HDD, and etc. from my existing computer. Anyway, here are the new parts that I was suggested.

ASUS P5K ATX LGA775 P35 DDR2 2PCI-E16 3PCI 1PCI-E1 SATA2 Sound GBLAN 1394 Motherboard
http://www.ncix.com/products/index.php?sku=24495

Intel Core 2 Duo E6750 Dual Core Processor LGA775 Conroe 2.66GHZ 1333FSB 4MB Retail
http://www.ncix.com/products/index.php?sku=25298&promoid=1042

EVGA E-GEFORCE 8800GTS 500MHZ 320MB 1.6GHZ GDDR3 PCI-E Dual DVI-I HDTV HDCP DIRECTX10 Video Card
http://www.ncix.com/products/index.php?sku=22688&promoid=1042

Kingston HyperX PC2-6400 2GB 2X1GB DDR2 800MHZ CL4-4-4-12 240PIN Dual Channel Memory Kit
http://www.ncix.com/products/index.php?sku=18288

Corsair HX520 CMPSU-520HX 520W ATX Triple 12V 40A Continuous 24PIN ATX Modular 120MM Power Supply
http://www.ncix.com/products/index.php?sku=19832

And thats the main plan, but as with most plans and especially greedy older brothers there is a sub plan. He mentioned something about taking my processor and giving me his old processor (Intel E6400). He was just wondering if he'd get any major gains out of it. His system currently sits as

Intel Core 2 Duo E6400
http://www.ncix.com/products/index.p...3&promoid=1001

ASUS P5W DH Deluxe
http://www.ncix.com/products/index.p...0&promoid=1001

EVGA E-GEFORCE 8800 GTS 500MHZ 640MB 1.6GHZ GDDR3
http://www.ncix.com/products/index.php?sku=21406

Corsair XMS2 TWIN2X2048-6400 2GB 2X1GB PC6400 DDR2-800 CL 5-5-5-12
http://www.ncix.com/products/index.p...1&promoid=1001

So would it be worth it for him to swap processors?

And does the new build for my computer look decent?
Thanks for any help in advance, this site has been super helpful in getting me to what I want. Thanks

so, youre buying the new processor.. and he wants it? correct?
my first tip for you is to punch your brother in the throat

i would do what ever bratton says

Hahaha, I was planning on clubbing him while he slept, but then he damn near offered just to pay for the processor. He seems to run everything without any problems anyway, so I didn't mind at least considering it. Other than that, how does the build look?

Getting really itchy to order this thing. Just want to double check the original plan looks good. Anything that would be worth changing or a small upgrade?

And BTW my brother fell down the stairs, KARMA WINS!

Looks like a nice build, but I would look into a more beefier power supply. And have you considered the Q6600 instead?

Yeah I have considered it but I'm budgeting this thing pretty hard atm. Thanks for the quick replies.

Looks like an sturdy build.What case, HDD , optical stuff are you salvaging from your other computer?