Thanks Moshu! I did get it back up and I'll tell people what I did so that I can mark this resolved. (Although I don't think it's a resolution people will love!)
1. I deleted the blog and dumped my tables (they were mostly empty anyway) and then reinstalled wordpress from scratch.
2. I actually did this several times importing my old entries to the new database via bigdump.php. Each time my blog wouldn't see the entries so I finally just started over.
3. Since my old blog installation on the old domain didn't have an export feature I know that bigdump.php was the only way to get 40 freakin' megs of entries in seeing as how my backup from January 7th was a .sql file.
4. I installed wordpress on my Mac desktop with mmap tried dumping my entries into my local mySQL databases, which worked. My locally hosted blog could see the entries!
5. My locally hosted blog also has export so I exported the files.
6. I broke the enormous .xml file into about nine parts using this guy's advice. I also upped the php.ini to allow the full 50 megs but this still timed out so I went ahead and broke it up.
7. For content posted between 1/7 and now (because my last backup was 1/7) I pulled from my livejournal crossfeed. I lost the comments but kept the content so I'm feeling like a winner.
I think my blog archives are too big. I think that in a few months I'm going to maybe create an archival blog and start over.
I appreciate the support, Moshu!!!