In that case, you'll probably need a macro like:
Code:
Sub CommaCleanUp()
Dim Tbl As Table, Cll As Cell
Application.ScreenUpdating = False
For Each Tbl In ActiveDocument.Tables
For Each Cll In Tbl.Range.Cells
With Cll.Range
If Len(.Text) > 2 Then
Do While .Characters.Last.Previous = ","
.Characters.Last.Previous.Delete
Loop
End If
End With
Next
Next
Application.ScreenUpdating = True
End Sub
For PC macro installation & usage instructions, see: http://www.gmayor.com/installing_macro.htm
For Mac macro installation & usage instructions, see: http://word.mvps.org/Mac/InstallMacro.html