If you don't have the manual to the radio, I'm sure you can download it from Futaba's site. That'd probably be the best way to figure out how to set up a new plane.
If you have a radio that hasn't been used yet, just turn it on...it defaults to PPM with a basic airplane set-up.
Here's a link to the manual for the 9CAPS:
http://www.futaba-rc.com/manuals/9c-...ies-manual.pdf