Unless you use mutimedia applications you won't see the benefits of a quad core in the immediate future.
K, just curious why you recommend the Intel chip over the AMD and why the dual core and not the quad core. Also, why vista 32bit and not 64bit?
32bit because there isn't adaquate support for 64bit at the moment and unless you plan on using more then 3GB of RAM (32bit is limited to 3.3GB) there is no reason to go 64bit.
Intel over AMD because Intel is superior then AMD in the higher end. To be honest, AMD's quad cores arn't all that attractive right now.
If you want a quad core then go with Intel's Q6600, but you'd need to downgrade something to do so.
The P35 is a much better chipset over the 680i. Never SLI unless you want more then two monitors or plan on purchasing two of the best video cards on the market.
that mobo could get a change. like http://www.newegg.co...N82E16813188015 it costs more, but its better when your current card is out dated then you can just SLI 2 of them to be able to support games again in like 2-3 years.