Is this the scroll bar on the window? It should appear automatically once you get more records in your found set than will fit in the window.
There were more records than appeared in the window and yet I could not scroll either with the mouse and obviously not the scroll bar since it did not show.
I decided to delete the last 50 records I imported from an excel file. When I imported the same file over again the scroll bar magically appeared. There must have been a bad import.
In any case it now works. Thanks for your help.