This example reassigns the CTRL+SHIFT+S key binding to the FileSaveAs command.
CustomizationContext = NormalTemplate
Set myKey = FindKey(BuildKeyCode(wdKeyControl, wdKeyShift, wdKeyS))
myKey.Rebind KeyCategory:=wdKeyCategoryCommand, _
Command:="FileSaveAs"
This example rebinds all keys assigned to the macro named "Macro1" to the macro named "ReportMacro."
CustomizationContext = ActiveDocument.AttachedTemplate
For Each myKey In KeysBoundTo(KeyCategory:=wdKeyCategoryMacro, _
Command:="Macro1")
myKey.Rebind KeyCategory:=wdKeyCategoryMacro, _
Command:="ReportMacro"
Next myKey