I don't think OP even has a clue how this works, why the forum is how it is, why bitcoin is how it is, etc. This isn't even posted in the correct forum. There is already a discussion going on regarding the new forum software and it's on a whole different level than just switching it over to vBulletin (which would be the most insane and terrible idea ever, by the way).

You can't just switch a forum like this over to a closed source and weak forum software like vBulletin.