Using Flex components in Flash 9 Preview

I’m starting a project in Flash Player 9 preview so that I can take advantage of all the great and super thing in AS3.0 - but unfortunately there have been no components released for 3.0 that is allowed in the flash player - and in fact the components panel is disabled when writing as FLA in AS3. I need some filetree, listbox, etc components, and I really would rather not reproduce them - my question is - is there any way to take 3.0 components that have been written in flex and modify the SWC files to allow me to use them? Maybe, if they were usable, I could use import from external library to bring them into my flash 9 as 3.0 file. Any ideas?