Ok, once you place a timer in the application and look at the properties you should see a property call Interval
The interval propery is in miliseconds, if you want the timer to get triggred every 5 seconds you would set it to 5000. Or code it in the form load.
You should also see an Enable property, that property should be false
VB Code:
Private Sub Form_Load()
Timer1.Interval = 5000 'This is the intervals between triggers (5 Seconds * 1000 miliseconds)
Timer1.Enabled = True
End Sub
Private Sub Timer1_Timer()
'Any code that goes in here will get executed
'On the intervals you set before
MsgBox "5 seconds Passed"
End Sub