It is not trivial, as that addin proves (which is VBA), as taking care of
many likelihoods takes a lot of code. If you just want a simple event based
test you can use something like

Private Sub Worksheet_Change(ByVal Target As Range)


On Error GoTo ws_exit:
Application.EnableEvents = False
If Not Intersect(Target, Me.Range("A1:H10")) Is Nothing Then
With Target
Select Case UCase(.Value)
Case "b": .Interior.ColorIndex = 5
Case "o": .Interior.ColorIndex = 46
Case "p": .Interior.ColorIndex = 7
Case "r": .Interior.ColorIndex = 3
'etc.
End Select


End With
End If


ws_exit:
Application.EnableEvents = True
End Sub


'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click on the sheet tab, select
'the View Code option from the menu, and paste the code in.





--

HTH

RP
(remove nothere from the email address if mailing direct)


"crapit" wrote in message
...
What abt using VBA?
"Bob Phillips" wrote in message
...
Take a look at http://www.xldynamic.com/source/xld.....Download.html

--

HTH

RP
(remove nothere from the email address if mailing direct)


"crapit" wrote in message
...
I know that it is possible using VBE!