For both of these examples, you need a label (called lblMsg) and a timer called tmrEvent.

Count Down Example

This example counts down from 10 when the form is loaded.

Private lngCountDownValue As Long '// variable that stores countdown value

Private Sub Form_Load()
    lngCountDownValue = 10 '// count down from 10
    tmrEvent.Interval = 1000 '// 1 second
    '// call the timer now for the first interval
    '// (otherwise we would have to wait 1 second)
    Call tmrEvent_Timer
    tmrEvent.Enabled = True '// timer is enabled
End Sub

Private Sub tmrEvent_Timer()
    lngCountDownValue = lngCountDownValue - 1 '// decrement the value
    lblMsg.Caption = lngCountDownValue & " seconds remaining"
    If lngCountDownValue = 0 Then
        '// time expired
        '// do not allow this procedure to call again.
        tmrEvent.Enabled = False
        Msgbox "Time has expired"
    End If 
End Sub

Clock Example

This example displays a clock.

Private Sub Form_Load()
    tmrEvent.Interval = 1000 '// 1 second
    '// call the timer now for the first interval
    '// (otherwise we would have to wait 1 second)
    Call tmrEvent_Timer
    tmrEvent.Enabled = True '// timer is enabled
End Sub

Private Sub tmrEvent_Timer()
    '// update the time
    lblMsg.Caption = "Time: " & Time()
End Sub