Check out Mike Jones FlashGen blog for some good tutorials on AS2 and AS3 components. He isn’t aggregated yet on MXNA so be sure to bookmark his blog.
URL: http://www.flashgen.com/
I look forward to his tutorials on components.

I was one of those people who thought LiveMotion was an awesome product. I loved AfterEffects and the Flash timeline used to drive me up the wall. But while LiveMotion was great for those of us who liked to use AE, it was anything but pleasant when it came to using ActionScript. [...]