Hello,
You can add properties to the profile database.
If you go to manage profile database in the portalserver settings you have the possibility to add new properties there and create a property that is mapped to the Active Directory. If you look at the properties you already have you will see the property name and to what property in A.D it is mapped to.
So when adding a new property you would have to know the A.D property name to map it to.
For example the Username property in A.D is namned samAccountName, so you will need to know the exact name for the street, telephones etc.
Regards,
Thomas