Cases, I have one of these that I gave Icey:
http://www.circotech.com/asxsualalcoc.html

They're beautiful...

As for the processor; your FSB has to match your ram, so if you're FSB is over 400 you have to use DDR2 ram; DDR400 you woulduse with a 400mhz FSB.

I know of no real uses for a 64bit system in a windows enviroment at moment, keep in mind that applications have to SUPPORT 64 bit processing in order to take advantage of it... Save your money, get a dual processor machine :x...
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