Hey high_rews.
If you are interested in trackdays in nothern/central europe there are quite a few, very good, german shops.
www.pro-speed.de, www.bike-promotion.de and www.rehmracedays.de spring to mind.
If you want to go on a smaller track in Sweden, I can proberbly help you with some kind of bike rental. That might also be possible on one of the german/east european tracks, but transport will be a bugger.
If you want a grand overviw of trackdays in nothern/central europe, go to http://racing4fun.de/portal.php?mid=1&task=show&kat=1&jahr=2008&mon=08&tag=05