Please Help!

I'm using the following in VBA:

Private Sub Worksheet_Change(ByVal Target As Range)
Dim icolor As Integer

If Not Intersect(Target, Range("A6:n2000")) Is Nothing Then
Select Case Target
Case 15
icolor = 4
Case -15
icolor = 46
Case 100
icolor = 6
Case -100
icolor = 3
Case Else
'Whatever
End Select

Target.Interior.ColorIndex = icolor
End If

End Sub

It change the color in that cell but I want it to color the row from coulums
A to N? Can somebody show me how to do that?