not sure about the UID part but for the password here is how it's done in the connection string you are trying to use:
ADDBOOKDB.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & ADDRESSBOOKDATAPATH & ";Jet OLEDB:Database Password=" & ADDRESSBOOKPASSWORD
I don't think you have to specify a username. Try it with the above and see if it works.