Mist :
I didn't purchase VBulletin yet. I want to make sure the UB importer script will work before I purchase VB. Erwin provided me the link that shows that someone did succesfully convert the UB database and according to Gamecash's response, the convert will work on both MySQL and DBM file. I will look into how to do a backup for my UB database first, then I will purchase VB. Thanks for the help.
Erwin, thanks for the link.
One suggestion to the VB development team. It might be good to setup a free lite version of VB where it will allow only allow people to import other database and all the forum to be a read only forum. If people can successfully import their old database, I am sure they will buy the product.