I doubt that is possible but I thought of asking anyway. I know that Tabulas lets you import your LJ backup files to your journal at Tabulas. Would this be possible with WP? However, Tabulas is not a blogging program you install on your domain, it's actually pretty much like LiveJournal but a bit more customisable so I doubt there's any way to import LJ entries to WP?
I think I read from somewhere that you can import some entries to WP, like those made with MoveableType or Greymatter... Is that true?