I wanted to know if I'll need to add anything like thermal paste. Apparently, the i7-930 comes with thermal pads, so will it be necessary? Also, I could save money by getting a non-modular PSU, but I don't know how cluttered everything will be. I would also save a good amount of money by buying a Rosewill PSU instead of Corsair, but from what I've found, Corsair is very reliable, and it seems that people have complained about Rosewill, so maybe it's worth the extra cash.
Is my cooling sufficient? And seeing as how my hard drive is bare, what do I need to get in order to get it to work?
1) You made the right call to go with the Corsair PSU. You don't want to risk you system with a Rosewill PSU.
2) Your motherboard will not support SLI, so I would recommend getting an ATI 5850 or switching to an SLI capable board like the ASRock X58 Extreme 3 (similar price) or ASUS P6X58D-E (a little more money)
3) Save some cash and go with the Samsung Spinpoint F3 1TB. It is faster and cheaper
So I switched to the ASRock X58 Extreme 3 motherboard, Samsung Spinpoint F3 hard drive, and G.SKILL RAM.
Regarding the CPU cooler: if I don't overclock, should I still go with that? I'm not sure if you were assuming that I'd OC or not. It's not a bad price, so - if needed/recommended - I'll definitely get it.
Also, my dad recently purchased Windows 7, and it came with the 32-bit and 64-bit versions. He installed the 32-bit version, so I was wondering if I'd be able to use the 64-bit CD for my new system. Would that work, or will I need to purchase Windows 7 for myself?
1) If you are not overclocking, there is no need to purchase an aftermarket cooler. At the sametime, why not overclock you CPU? It is very easy to get it to 3.2 Ghz with minor adjustments for additional processing power.
It wouldn't hurt having the HSF in the end, so if the budget permits, I think it is a worth while investment. It will allow you the option to overclock, as you become more experienced or at best will provide better cooling (which is always good).
2) Did your Dad's copy come with two Keys or just one? If it came with just one Key, I think you'll need another liscense for Windows 7. You can just install the 64-bit version and use the key and see what happens. You might get lucky and the key can be used twice or at worse, you purchase a new key in 30-days and activate it with the new key. You won't be required to do a reinstall.