InfoPath Dev

i have a drop down list pre-populated with company divisions. based on a textbox called name, i want the dropdown to autoselect.  that is, when someone types in their name i want the dropdown to go to their division.  i can use the username field from windows is needed, as i have the name textbox autopopulate to username.

If you have a map, you can use a filter in the dropdown. Otherwise, you can use a rule for the users. If you have >20 users, I recommend creating a map. If you have >100 users, I recommend using Qdabra's Active Directory Web Service, which will return Active Directory details for all users so that you can set it automatically.