password og brugernavn i Mozilla

Hej jeg bruger mozilla(ver 1.6a) Bruger mozill som min mail klient. Jeg er nu ved at tilmelde mig en Eclipse newsgroup. Men jeg skal bruge password og Username:

Eclipse Corner newsgroups are available via NNTP or via a (very) simple web
interface. For best results we highly recommend you set up your favorite news
reader software (e.g. Outlook, Netscape, etc) to subscribe to the Eclipse Corner
newsgroups you are interested in.

NOTE: You will need to set up your newsreader software with the ID and password
provided above.  You will also need to provide the user ID and password when you
access the mailing list archives.

Er der nogen der ved hvordan man gør det i Mozilla ???