Well, FB isn't a graphic editor, so, if you have Flash CS, that's the best way to create graphics. You can then compile them into SWC and use that SWC in FB. Other options are to make SVG in something like Inkscape and then Flex compiler should technically understand SVG, but I wouldn't count on 100% compatibility in the latter case.
- [flexcoders] How to use Graphics in FB4 Shabir Gilkar
- Re: [flexcoders] How to use Graphics in FB4 Oleg Sivokon
- Re: [flexcoders] How to use Graphics in FB4 Shabir Gilkar