What is a quality flash program that is not extremely expensive?

I want to learn how to make flash and animations and such, but I don't have a program for it. Does anyone know of a good one that I could get?What is a quality flash program that is not extremely expensive?
A flash animation program like Adobe can be found at adobe.com. there isnt a real cheap one since its a great software =)What is a quality flash program that is not extremely expensive?
WEEE! idk I think it bes free... http://www.sothink.com/ And you can also use Windows Movie Maker. It takes a while, but get all the frames ready, set the timeline to the largest setting, and set your frames to be little bitty.

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