I believe
this is the latest version of the tool we'd need, although obviously I have no idea if it'll work or not. It's also quite old, but the threads surrounding it appear to be quite comprehensive, so any problems
might be fixed. I grabbed the 0.31 zip off his website and I'm having a look around to see what it tries to do.
I might even have to find a copy of UBB and attempt the whole process on my test server. Oh, the excitement!
EDIT: Hmmm, my Google-Fu doesn't reveal much more than I've already recovered. Anyways, I think it's certainly possible to migrate the entire forum over to phpBB (in at least some version). We'd keep all the posts, threads, forums, and users, but we'd lose people's saved Private Messages at least, and the ban lists might be wiped, allowing old asshats to plague us once more. Average implementation looks to be a couple of days, barring any huge mishaps.
And you're right, we could just start a fresh in the 'new' forum, and I don't think you'd have anyone complain. It's just that it'd be a bumpy ride for a while - registrations can chew up some CPU cycles - and we'd need to figure out some sort of system so that users can prove who they are (so we don't get people registering under already taken user names on this forum and generally being a nuisance)
Of course, another route altogether would to find some mods for the current forum software to try and hack it up to current 'standards'. That could prove... interesting. The hacks are out there, at least.
[ May 16, 2008: Message edited by: Dasleah ]