InfoPath Dev

I need to know how to retrieve data from an Active Directory service or smart card.  All I know how to do is retrieve the username when the user opens the form.  Then I store the username into a field and manipulate it.  But I want to know how to retrieve their name, username, office, building, email, and phone number.  A plus ...

You said that you use an Active Directory web service so that you can retrieve their dept, phone, email, location. You check group membership and control permissions within the form base upon their groups. How do you do that?  I see that I can pull the user's username.  I know that I can create a list in Sharepoint and manually add ...