Hi,
Here is some code I use to ensure that at least Columns up to and including
Column P are always visible. It works by using the VisibleRange thingy to
manipulate the zoom %.
Change the two Columns.Count refs to suit your page.
Put this code into an event macro for the sheet you want it to work on.


ActiveWindow.Zoom = 100
A = 100
If Windows(1).VisibleRange.Columns.Count < 17 Then
Do Until Windows(1).VisibleRange.Columns.Count 16
ActiveWindow.Zoom = A
A = A - 1
Loop
End If

Hope this helps.