Cybermind is currently offering a 25% discount on MSI Intel mainboard packages. That's an offer I couldn't refuse -- despite what I said earlier about upgrading Mr L33t. Shelled out just over a grand for an i7-based system, 8 gigs RAM and a GTX660Ti video processor. Nice.
The old parts are going to become my in-house project: upgrading the living room antique Win XP-running PC to be compatible with the first decade of the 21st century at least. I've never put together a whole system from scratch, so wish me luck on this one. I'm sure I kept the manuals around someplace... hmm.