Take a look at the sp_change_users_login system stored procedure. You can use this stored procedure to relink the database users to the new logins.

-Mike


>Hi all:
>
>Using SQL Server 7 / MSDE 1.0
>
>I have to move an existing pair of SQL databases to another installation. I have successfully backed up and restored the databases to the new installation. However, I am having a problem assigning the user to the database. After I add the user to the new installation, I then attempt to assign this user permissions on the databases I've restored. Upon doing so, I get the following error:
>
>"Error 15023: User or role 'Closing' already exists in the current database"
>
>Yet, the user does not really have the permissions showing in SEM (and the application is freezing on the workstations). I've tried a number of things to get around this, including trying to setup the user in the new installation prior to restoring the databases. Same issue occurs.
>
>It's as though the backup contains security information and prevents me from properly setting up security in the new installation. What do I need to do for everthing to work?
>
>Thanks,
>
>Del