simple SWF file creation tools

Hello,

I am considering using flash for a kiosk project together with Visual Basic. I need to create simple SWF file with some buttons and background image, and maybe play some movie clips. Could you kindly suggest free tools for that purpose, if there are any?
If there are not free tools for that, what is the normal commercial enviroment use?

Thank you very much in advance for your help and guidance.

Ap

You can use for free Flex SDK but this is only command line compiler.

Thank you goldhand for the reply and guidance. I checked on the webpage of adobe about this tool, and belive will do the job.