OK, I think this will work:
- In deisgn view, select View/View Code
- At the top left of the code window, select Form from the drop-down list
-(It will create a bit of code for Form_load - ignore this).
-In the right-hand drop down list, select Current.
-It will have created a bit of code that says:
Private Sub Form_Current()
-Immediately after this line, but before the End Sub line, paste in this code:
Me.COMMENTS.Value = 0
-Click the save icon and close the code window.
That should do it (I think)