I apologize for not making it clearer about logging in to the new forum.
1) You DO NOT need to re-register another account if you have an old account at the old forum.
2) Since vBulletin is different from UBB forums in terms of vBulletin not keeping separate user names and member names, you will need to login with your member name and old password.
So for instance, your old
user name (what you used to use to log in with) was: true
member name (the name that is displayed when you post) was: false
then log in with false from now on.
Also, please DO NOT email me at [email protected] for the time being since that account is buggy at the moment. Instead, send to [email protected]