DWA 7 with Addressbooks

HelloI switched the Design of one UserMailbox from iNotes5 to DWA7 and after that switch the User cannot use the Domino Directory anymore in his WebAccess Mailbox.

When the user composes a new Mail and chooses clicks on the TO Button the field where formerly was able to select the Adressbook (similar as in the Notes Client) the list is empty.

No Adressbook is choosable as none is listed.

I checked the online help as well as the Domino Admin help but didnt find the solution.

What do I have to do to make the Domino Directory as well as maybe an additional Adressbook available for the Users in DominoWebAccess 7 ?

Thank you very much for any help.

Dirk