Drawing in Flash and CS4

Paper prototypes are now finished, recorded, and posted. That is a heavy weight off my shoulders. Now though, we have started to work in Flash. We have done the Drawing in Flash topic and are getting ready to do Adding Animation/Navigation. This is where the next hurdles begins. The majority of our labs have Flash CS4 on them, and this is going to throw a big wrench into Adding Animation. CS4 has changed everything when it comes to tweening. Oh well. If everything was easy, why would we do it?