avoid question message box

hi, in the below code, how can we avoid the question and still do a full processing? (there is no decision making needed anymore.. the equivalent of "Yes" should be the default.. can you suggest how this code should be changed to accomplish this? thanks-
=============================
 Dim msg As String
  msg = "Would you like to process all (" + LTrim(Str(NumRecsToDo)) + ") records for: " + _
         Chr(13) + Chr(10) + Chr(13) + Chr(10) + Sender1 + IIf(Len(Sender2), " ," + Sender2, "")
  Response = MsgBox(msg, vbYesNoCancel + vbQuestion, "Process Confirmation")
  Select Case Response
    Case 6
      'Process All Records
      LabNum = 0
    Case 7
      Set db = CurrentDb()
      RecSource = "AFRTesting Where Report_Num = '" + ReportNum + "';"
      Set Ds2 = db.OpenRecordset("Select * From " + RecSource, dbOpenDynaset)
      Ds2.MoveLast
      NumRecsToDo = Ds2.RecordCount
 
    Case 2
      MsgBox "AFR Report Request Cancelled By User"
      Exit Sub
  End Select