Macro: Remove Spacing Between Table Cells

I received a document that had hundreds of tables, all with a nice 3D border. Then somebody said that the border looked ugly so I started writing a macro to change all the borders to something more plain. Changing the borders was simple, but the cells had space between them which resulted in a double border. Getting rid of this space was not so simple.

Finally, I found this little macro at the Egghead Cafe:

With Dialogs(wdDialogTableTableOptions)
   .AllowSpacing = 0
   .Execute
End With

A second method (that I did not try) is to use this:

Selection.Tables(1).Spacing = -1

The full macro follows:

Sub remove3dBorder()
'
' remove3dBorder Macro
'
'
Dim myT As Table

For Each myT In ActiveDocument.Tables

    myT.Select
    
    'Selection.Rows.HeadingFormat = True
    With Selection.Tables(1)
        With .Borders(wdBorderLeft)
            .LineStyle = wdLineStyleSingle
            .LineWidth = wdLineWidth050pt
            .Color = wdColorAutomatic
        End With
        With .Borders(wdBorderRight)
            .LineStyle = wdLineStyleSingle
            .LineWidth = wdLineWidth050pt
            .Color = wdColorAutomatic
        End With
        With .Borders(wdBorderTop)
            .LineStyle = wdLineStyleSingle
            .LineWidth = wdLineWidth050pt
            .Color = wdColorAutomatic
        End With
        With .Borders(wdBorderBottom)
            .LineStyle = wdLineStyleSingle
            .LineWidth = wdLineWidth050pt
            .Color = wdColorAutomatic
        End With
        With .Borders(wdBorderHorizontal)
            .LineStyle = wdLineStyleSingle
            .LineWidth = wdLineWidth050pt
            .Color = wdColorAutomatic
        End With
        With .Borders(wdBorderVertical)
            .LineStyle = wdLineStyleSingle
            .LineWidth = wdLineWidth050pt
            .Color = wdColorAutomatic
        End With
        .Borders(wdBorderDiagonalDown).LineStyle = wdLineStyleNone
        .Borders(wdBorderDiagonalUp).LineStyle = wdLineStyleNone
        .Borders.Shadow = False
 
        .TopPadding = CentimetersToPoints(0)
        .BottomPadding = CentimetersToPoints(0)
        .LeftPadding = CentimetersToPoints(0)
        .RightPadding = CentimetersToPoints(0)
        With Dialogs(wdDialogTableTableOptions)
            .AllowSpacing = 0
            .Execute
        End With
        
        .AllowPageBreaks = True
        .AllowAutoFit = True
    End With
    
    ' turn on header row
    myT.Cell(1, 1).Select
    Selection.Rows.HeadingFormat = True
    
    Next myT
End Sub 

[Source Egghead Cafe and Google Answers]