I was getting the same error...but now...I was able to get in...
like this:

VB Code:
  1. module00conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
  2.                       "Data Source=" & FileName & _
  3.                       ";Jet OLEDB:Database Password=admin"

I guess that the other two is when you got the usergroup working, anyway...i couldn't make it work with a system.mdw like file...

this should take care of your issue of accessing a passworded database...