See also the European Bonsai Association website on
http://www.ebabonsai.com/ and the European Suiseki Association one on
http://www.esasuiseki.com/
It's worth having a look at the exhibitions of past conventions; for EBA go to Gallery --> Conventions. It is also worth remembering that there are a lot of imported Japanese bonsai in Europe and that it is sometimes hard to know which trees - junipers, pines, maples and shohin bonsai especially - originated in the country which exhibited them. I tried to gauge the height of the bonsai shown these last years, to see if Liporace's statement that Europe was mainly growing medium-to-small size bonsai was accurate, but from photos it is just too difficult to judge.
The Zurich people are indeed going to extraordinary lengths to make the 2010 show an outstanding event and I wish I could visit it! All the more since Switzerland has some quite exceptional bonsai artists, like Serge Clemence, Pius Notter and Peter Thali.
Bonsaikay, I wish you much success, you deserve it.
Lisa