Rick,

Copy the code below, right click on the sheet tab, select "View Code", and paste the code into the
window that
appears.  You can change the B1:H1000 to a named range, a dynamic range, or any other range that you
want.... this will store the date of the change in column A.

HTH,
Bernie
MS Excel MVP

Private Sub Worksheet_Change(ByVal Target As Range)
Dim myCell As Range

If Not Intersect(Target, Range("B1:H1000")) Is Nothing Then
Application.EnableEvents = False
For Each myCell In Intersect(Target, Range("B1:H1000"))
 Cells(myCell.Row, 1).Value = Date
Next
End If
Application.EnableEvents = True
End Sub

Rick, Bernie's code will work great for you if you want to update the
date/time stamp for a row when you update any cell in that row. If you
don't want that to happen (have an original date/time stamp for when
the info was first entered) then here is Bernie's code modified. This
code will enter a date/time a stamp into column A only if it's blank.
Also, if you'd like the time along with the date, change Date value to
Now in the code and format accordingly.

hope this was helpful
Sandy

Private Sub Worksheet_Change(ByVal Target As Range)
Dim myCell As Range
If Not Intersect(Target, Range("B1:H1000")) Is Nothing Then
  If Cells(Target.Row, 1).Value = Empty Then
     Cells(Target.Row, 1).Value = Date
  End If
End If
Application.EnableEvents = True
End Sub