Sue,
Good question. When you do the import, you can specify a password that will be used for each user. If you don’t do this, they all get a separate password, that is output to the screen once each user is imported. Once that screen has been closed, there is no way to get them back. As your guys found out though, they can be reset.
In terms of usernames, these can only be changed in the database, in the gibbonPerson table. Send me a list of the current and new usersnames as a spreadsheet, and I will write the SQL to run on the system to fix it all up. As long as they are all unique, it should be no problem.
Progress!
Ross