> Ok, I think now I got it. What confused me, was the fact, that you don't
> need further authentication, when you logged in a windows system.
> Now my next question. Is it possible to use the windows authentication
> for a different user, than the User, that I'm logged in?
> For example I log in on a windows system with the user WinUserA and
> password abc. Is it then possible to connect to a firebird database with
> the windows user WinUserB with password xyz?

Possibly by using the "Run As" functionality in Windows 2000 / XP?
http://support.microsoft.com/kb/294676



--
Best Regards,
Thomas Steinmaurer
LogManager Series - Logging/Auditing Suites supporting
InterBase, Firebird, Advantage Database, MS SQL Server and
NexusDB V2
Upscene Productions
http://www.upscene.com