On Friday I wrote here that I was determined to get ProTools to work. Lo and behold, I succeeded! After 30 minutes of research I figured out the problem - I had plugged my Mbox into my external USB hub instead of directly into the computer. That solved my latency problems, my error message problems, my sound output problems, everything. I spent most of the weekend teaching myself how to create loops and just basic MIDI 101 stuff; now I'm foaming at the mouth for more instrument plugins and I want to take a week off from work just to record record record.
I'm so glad I didn't buy an HDTV.
So, yeah - great weekend, even if I didn't leave the apartment.