NG,
You can do something like this:
Dim RngRows As Long, RngCols As Long
Dim r As Long, c As Long
Dim rng As Range
Set rng = Range("A4:D17")
With rng
RngRows = .Rows.Count
RngCols = .Columns.Count
For c = 1 To RngCols
For r = 1 To RngRows
MsgBox .Cells(r, c).Address & " is Row " & r & " and Column " & c
Next
Next
End With