Hello,
I saw many post in this newsgroup about row highlighting,
this code written by jemcgimpsey I found in this newsgroup works well:

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Private Sub Worksheet_SelectionChange(By Val Target As Excel.Range)
Static oldRange as Range
Static colorIndices(256) As Integer
Dim i As Integer
If Not oldRange Is Nothing Then 'Restore color indices
For i=1 to 256
Cells(oldRange.row, i).Interior.ColorIndex=colorIndices(i)
Next i
End If
For i = 1 to UBound(colorIndices)
colorIndices(i)=Cells(ActiveCell.row,i).Interior.C olorIndex
Next i
ActiveCell.EntireRow.Interior.ColorIndex=15
Set oldRange=ActiveCell.EntireRow
End Sub
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Now I need your help because I'd like to to have highlighted only the
cell on coloumn "A" - not the entire Row.
I'm sure you Excel experts can easly change this code, I'd be greatful
if
somebody can help me.

Thanks,
Ale.