This is the macro im using for Excell 07 to change Tab colours on each sheet
(i have 52 sheets & works fine & when i use it for Excell 03 i get a run time
error to debug Why & is there any other solutions or macro to use on both

Private Sub Workbook_SheetChange(ByVal Sh As Object, _
ByVal Target As Range)

Dim myRngToInspect As Range

Set myRngToInspect = Sh.Range("C300")

If Target.Cells.Count 1 Then
Exit Sub
End If

If Intersect(Target, myRngToInspect) Is Nothing Then
Exit Sub
End If

If UCase(Target.Value) = UCase("QC") Then
Sh.Tab.ColorIndex = 3 'red for me
Else
Sh.Tab.ColorIndex = 2 'White for me
End If

End Sub