Hi Hann
Welcome to Switzerland! There's the American Club of Zurich (I know, I know...). It's easy for a Yank to join but there's an Associate membership for non US. You might check there -
http://www.acz.ch/index.php?option=c...=82&Itemid=111. I'm not sure what hoops you need to jump through as an associate member. They have frequent social events. Maybe check it out...?
I know you're in Zürich, but south of there in Zug there's the International Men's Club of Zürich (um... I'm assuming that Hann is Johannes and not Hanna?). The Lingua Franca (!) is English but there are far more other nationalities represented (half the club's board are Dutch).
http://www.imcz.com
Hope that helps.
D.