I fill my business object by 'Select * from cowboys order by cow_lastname, cow_firstname' and then it comes in alphabetically. But when I add a new cowboy how do I keep the data in Alpha order? The form is a SF maintenance form but the navigation keys no longer work after I add a new cowboy. ???? TIA.

Either you have the business object in Edit or Add mode or the business object is somehow getting dirty (some property set is firing) and making the business object dirty. 

To figure out what's causing it, add a handler to the business object's IsDirtyChanged event and put a break point in the handler.  When the break point is hit, check the call stack and you should be able to figure out what caused the business object to think that it's dirty.