February 1, 2010 7:17:58 PM CET
Have you tried calling Zandvoort Gemeente (Local council)? If he had a registered address there, they would have it recorded - whether they'd be allowed to give it to you (confidentiality) is a different matter. But sometimes you can find the odd helpful person who might be able to give you some advice about searching?
Another possibility; is he the type to use computers? Many people here use Hyves, rather than Facebook/Myspace/Bebo. Maybe it's worth registering and doing a search on there?
There are also hundreds of free newspapers in this country
Perhaps Google Nieuws and Zandvoort, and see if you can place a personal ad?