Changing Passat headlight bulbs.

Hi, is there a instructions of how to change the front headlight bulbs on a VW Passat 2002 50k miles. Its the third time that my bulb is gone and the dealer charges me £18 + vat to change it everytime. Would I need any special tools to do the job? I would like to do it myself especially because I'm planning to travel the continent shortly. Any help will be appreciated. Thanks Twanny