convert tForum to vBulletin version 2.2.3

[prawn]

Hey
My Site grows very fast and I think about using the vBulletin Board because it's just great, not only for users also for admins, too.

I'm using the tForum atm, it's too large, to convert it manually, there are 1083 topics and 28826 posts.

So u see that i need a good script which converts tForum to the latest vB board.

Is there any script or could someone help me doing that?
I know there's a topic out threre but that script is not enoug, i don't want to do that by hand.

many thanx

jake