The hack that I am doing for ey143 (I really shouldn't say that -- he had the idea, but I am doing it for me ) adds categories to posts so that users can mark information. It will all be clear in an hour or so, I hope! We should release it next week once he has had a chance to test it.

As for where to install PHPNuke, I have not looked at the database for it, yet, but I would suspect that it would be cleaner to install it in its own database and have vB look up information from it rather than plugging more tables into vB's forum database. However, I have not installed it, yet, so that I cannot say with any firsthand knowledge of the actual workings.