Romper Room is now in session.. Let's see some more of those flame posts so I have something to do today. I know she already deleted a number of them but hey, I'm always hopeful that more of you that haven't had your nap yet and are a bit grumpy will come out to play.
I can't find anything explaining how to save new CS6 actions in legacy formats for use in earlier versions. The best thing I can come up with is to install the CS6 trial, check the steps in the action you have and then record a new action in CS5 by copying each step. All an action is is taking a step by step process and automating it, so it should not be hard for you to replicate it in CS5 unless one or more of the steps relies on some feature that CS6 has that CS5 doesn't.