Yesterday I finally did the 70-235 exam, "Developing Business Process and Integration Solutions Using Microsoft BizTalk Server 2006" and I passed it!
Now I'm officially a MCTS for Biztalk Server 2006! :-)
In the days before the exam I read some blogs from other people who did the exam and they are right about the content. About 50% of the questions are about the BRE and BAM, so if you're planning to take the exam make sure your knowledge is up-to-date about these two subjects.
As always they ask some code related questions and I saw some new type of questions in which you have to select actions and put them in the correct order.