Conditional Formatting in Excel pre 2007

Hello, I have a need to apply paint particular cells or rows upon found values in more than three categories per worksheet, so conditional formatting would not work for those using Excel 2003 or earlier version. I tried to use a private sub, it worked but eliminated the undo (ctr-Z) option when editing the worksheet. So I moved the sub to a module and invoke with a button, but then the advantage of dynamic feedback to worksheet user is gone.

Is there a better way to do it with no side effects like that?

Tks, N
-/-
Set Matrix= Range("J2", "J" & n)
For Each cell In Matrix
If cell.Value = "3" Then ' Color it red
Range("J" + CStr(cell.Row) + ":J" + CStr(cell.Row)).Interior.ColorIndex = 3
ElseIf cell.Value = "2" Then ' Color it green
Range("J" + CStr(cell.Row) + ":J" + CStr(cell.Row)).Interior.ColorIndex = 6
ElseIf cell.Value = "1" Then ' Color it green
Range("J" + CStr(cell.Row) + ":J" + CStr(cell.Row)).Interior.ColorIndex = 4
Else ' Remove all color
Range("J" + CStr(cell.Row) + ":J" + CStr(cell.Row)).Interior.ColorIndex = xlNone
End If

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