[Paul M]

Originally Posted by Dean C

That won't work, because he doesn't know what the password is. I'm sure there's a utility provided with the default vBulletin files, in a do_not_upload directory, that will reset the password of an administrator if you upload it via FTP

Not exactly, you can use the tools.php utility to change an ordinary account into an administrator - so you just register a new account and then upgrade it.