When I did this all that happens is that the listbox scrolls. Is the listbox supposed to be in the container? According to the syntax it is. I must be leaving something out 1. I put a container on a form 2. Some labels on the form to watch the "scrolling" 3. I put the FOR loop in the INIT of the listbox to populate it 4. and the code in the Mouse Up event. I'm not sure what the problem is.