This past weekend I did a fresh install of Lion and all my apps. So after I installed the CS6 Production Suite, of coarse, no ProRes Codec in PPro CS6. Understandable. I decided not to re-install FCP 7, and just install FCPX, Motion 5 and Compressor. After all of that, still no ProRes Codec in PPro CS6. Okay, what's going on here. I took a shot and installed Quicktime 7 Pro. Then I found the ProRes Codec was showing up in PPro CS6. So everything I read on different message boards, that all I need to do to get the ProRes Codec, is spend $50 at the app store for Compressor, and you'll get the ProRes Codec. Doesn't seem to work for everybody.
I had the same exact problem that iRuss says but not even installing QT7 the ProRes Codecs appear in my CS6 apps.
After several hours I came with the solution. Install the ProApps QuickTime Codecs v1.0.1 (available for free here) and the codecs appear in every CS6 app.
Thank you mr blotchmovies! I just bought compressor for use in After effects and Quckctime pro and it did not work. I do not have Final Cut or Motion only AE and QT pro 7. I just followed your instructions by installing te ProApps QuickTime Codecs v1.0.1 restarted AE CS6 and QT pro 7 and the codecs are up and running! Thanks man!