Can think of a couple of ways...but here is one that is pretty easy....
In the OnClick property of the button, put the following
Dim strMsg As String
strMsg = MsgBox("Do you want to see the summary? (Clicking no will display the details.), vbYesNo, "Display Summary?"

If strMsg = vbYes Then
' Put your summary report stuff here
Else
' Put your detail stuff here
End If
You could also create your own small pop-up form asking which to view....send me an email if you like and I can put together an example for you... Please remember to give helpful posts the stars they deserve!
This makes the post more visible to others in need!
Robert L. Johnson III, A+, Network+, MCP
Access Developer/Programmer
robert.l.johnson.iii@citigroup.com