Click the following threads, and subscribe. Check your subscriptions often, and when somethings updated, that means theres a class thats available.

http://www.dreamviews.com/f12/dva-lu...arting-100204/
http://www.dreamviews.com/f20/dva-lu...arting-100203/
http://www.dreamviews.com/f79/dva-lu...arting-100205/

(all three links are different. sometimes they don't get updated at the same time so it's better to keep track of all three)