Hi
Assuming you already have the application running and you have a form open (possibly even hidden or minimised to the task tray) then you can use a timer control on that form to fire an event every n milliseconds. You should see a little icon in your toolbox that looks like a watch - click and drag it onto your form and then you set the enabled property (of the timer control) to true in the main form 'open' event and set the 'Interval' property to 60000, also from the main form open event.
HTH, Andrew