Simple ActionScript Help - MX

I have done the tutorial ‘Movement Using ActionScript’ which is just what I was looking for. However, I want an object get to a certain location on the stage ie 200 pixels across, then come back the other way. I have had a go myself but failed miserably.:frowning:

I am very new to ActionScript so I have no idea how to do this. Can anyne please help me out???

Thankyiu very much.