[Mailman-Users] ListProc to Mailman migration -- any tools or guides?

I'm going to be migrating about 400 lists with 25K subscribers from ListProc to Mailman. I'm looking for whatever tools I can find to aid in the conversion process. Of particular concern is the creation of the replacement list in Mailman with a reasonable mapping of the ListProc settings into equivalent Mailman features, and of course the conversion of the subscribers. Archive conversion would be nice too, but is a much lower priority.

In my searching so far I've found a few bits and pieces, but nothing comprehensive. So before I get out the hammer and saw, I just want to make sure I'm not missing a good resource for doing this.

...BC