I've installed/reinstalled Zen asset inventory 7 SP1 several times on my
Windows 2003 server.

I can't access the manager, as the database won't accept the default
credentials of Username: Entadmin password: enterprise.

I've tried all the variations of case sensitivity, all capitals, all
lowercase, EntAdmin, Entadmin, but nothing works.

Does anyone have any idea what could be wrong?

Any assistance appreciated.