cool case, psu *should* be good enough. I just like antec being that it has a separate line for each voltage (instead of the 3.3v being derived from the 5v line) and its quality (=hella heavy). I haven't heard of that brand of PSU, but it really should do for what your using it for.
As for the other suggestions on CA, WinXP is a must. Dual boot Win98se to play older games if you must, but WinXP is superb for stability and usability. I once thought that I'd never give up Win98SE, but once I made WinXP look and work like the classic windows shell, its been nothing but smooth sailing.
As for itchynadz comment, if you want a full nforce, get the A7N8X-Deluxe or A7N8X-E Deluxe (same thing, only the -E has the ASUS wireless adapter port onboard). being that they are the only A7N8X's with IEEE1394 (aka Firewire), Serial ATA, and Soundstorm 5.1 surround sound as well as dual channel ddr support. As for ASUS/Newegg, if you want you can go refurb. I'm running 2 ASUS refurb boards (A7N8X Deluxe and plain A7N8X in this house) and the ASUS refurb quality is pretty much perfect (it works just as well as my retail A7N8X Deluxe I have in my PC). However, the IO Panel on the back for this style of motherboard is not normal ATX, the ports are kinda in different places, so the refurb one won't come with the io plate to fit it. However, I picked one up on ebay for $5 or so, if not, if you're good with a dremel tool or the like, you could grind out a regular atx ioplate to fit it ;)
Other than that 512mb is fine, 1gb is nice for some of the newer games tho.
_ _ - - = = Pr3tty F1y = = - - _ _