Migrate flash cs5 project to flash builder 4.6 - how?

Hi,

I would like to migrate my OOP-as3 flash-project to flash builder (or maybe textmate (Mac)??). Is there ANY detailed tutorial available that can explain me how to setup flash builder 4.6 (or older) so I can easily import all my classes and frameworks to this app?

Currently I’m stuck because - to be honest - I don’t get it. There are thousands of preferences and buttons and I have no idea what they mean.

How do you setup / import an additional game-framework (so all my classes can access them)? TIA!