Windows 7. How much Ram would you recommend? What my friend is doing is using Flash and Photoshop with multiple large files open. He wants the system to be super fast when working with these types of files.
12 GB RAM is affordable, and you can save yourself some money to put towards it by going for a more sensible motherboard - you don't need 3-way SLI if you're just running a single GTX260.
Try the P6T motherboard as recommended by hefox. You can also save a few bucks by going for slower RAM - many tests from Toms and others show that RAM speed makes little difference on i7 systems, and tighter timings only help synthetic benches (although I have seen very marginal benefits on CS4 products).
Found this Ram over at Amazon.com that you should take a look at, for $30.00 more you can get a 6gb(3x2gb) kit.
OCZ OCZ3P1333LV6GK DDR3 PC3-10666 1333 MHz 6GB Platinum XTC Triple Channel Kits $99.99 & this item ships for FREE with Super Saver Shipping. http://www.amazon.com/OCZ-OCZ3P1333LV6GK-PC3-10666-Plat...
Did not see Case, Monitor, Optical Drive or Operating System mention in your Build Specs plus other items you might be needing.
Lets start off with the Cases', here are some with very great Airflow that you should check out below.
Antec Twelve Hundred Black Steel ATX Full Tower Computer Case - Retail $169.99 Free Shipping*
($10 off with promo code ANTECAUG, limited offer) http://www.newegg.com/Product/Product.aspx?Item=N82E168...
*note: Here is an alternate to your Mobo selection that you should look at, plus it has the same ombo Deal with the OS, I suggested above, unless your friend is going with Tri-SLI.
The ASUS P6T Deluxe V2 LGA 1366 Intel X58 ATX Intel Motherboard - Retail $289.99 Free Shipping* http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...