This page will list the users in VSS which do not have a matching Fortress user with the same name. After selecting the user names to import, and clicking the Import Selected User Names button, you will be prompted for a password which will be given to all of the newly created users.

Folder Security rights will not be imported for the users, so you will need to manually correct those for each repository. In addition, you must check the repository access for any repositories which have Folder Security diabled.