Hi Evilrooster,
I'm prettymuch a newbie on geocaching (only started this weekend, with my friend Team Skansen). But I find that the geocache.nl site offers quite a good map-overview of caches. Don't know if you already know the site:
http://www.geocaching.nl/seek/caches/caches_all.htm
That map has all of Benelux on it.
greetings,
syps