I have now finished version 1.0 of MTLJPost.
Yea, this was after Kristian told me how he did it, I figured I could simplified things. And I did.
Install LJ::Simple library, put .pl file in your Moveable Types MT Directory.
Edit the .pl file and set:
LJ_USER - Your username on livejournal
LJ_PASS - Password, obvious
SITE_NAME - Your Sites Name
SITE_LINK - Your Sites Link
I think thats about it...