as for the motion tweening part, you would use ease. Here is my tutorial on motiont tweening that cover easing in it. Read through it and see what you can pick up from it.
<A>http://www.flashtroops.net/bbs/showthread.php?t=20<A>
I highly suggest u try taking this tutorial from what other post said it will help out a lot
as far as the tweening goes. I already looked it over and was amazed and ive been animating for years now and i guess im still a noob lol. But im not sure that will work if your have an older version of flash but i highly suggest taking a look at that site