The Belgian XP/Agile users group can be found at http://www.xp.be/
This is also the home of the XpGame, a free, fun simulation game to experience planning, releases, velocity, acceptance tests, customer-developer cooperation... Download the instructions and materials from http://www.xp.be/xpgame/
We regularly collaborate with the DutchXpCommunity.
We organize the BeneluxXpDay together with the DutchXpCommunity.