Webbsta 0 Light Poster

I'm using a system.timers.timer in my console application, but i don't know what the sub would be to trigger each time the interval elapses, can anybody help, thanks.

SOLVED: all i did was use this:
Dim WithEvents Timer1 As New System.Timers.Timer
and
Private Sub timer1_tick() Handles Timer1.Elapsed
MsgBox("TICK!!!")
End Sub