I believe you can edit the Registry for Logicity Viewer and add default entries for username and password for the database logins. These are blank by default.
If you're not used to poking around in the registry, you might not want to do this solution, but it's an option. You would have to run a script on each machine to add the defaults for that user. I'm not sure whether you can set it for local user or just for the machine either, so if it's shared, you might use the same logins for multiple people.
Thanks,
Andrew
