Ok. I think I've finally gotten this sussed.
One of the reasons I haven't blogged much lately -aside from near-terminal depresssion- is that I just couldn't figure out how to fix the bloody comment system, which has been broken for nearly a year now. Yes, that's sad.
If you go back, (not very far, really, heh) you'll see various tales of horrible encounters, including MT 4.0. Bleh.
I eventually backed up all my posts and comments, the SQL database, then nuked my entire MT directory. The whole thing. The tricky part was remembering the steps in recreating a database. For example, you have to manually add a user to a specific database. That's when I went to bed last night (another hint: don't try this stuff at 2:00am). Got up, and exclaimed "Duhh!" Added self as user to database.
This allowed me to finally log on to the blog and begin to rebuild things. The good news is that the categories and such seem to have been successfully rebuilt. The bad news is that my blog list, original page setup for the Launchpad, and goodies like the 101st Chairborne are gone.