Moving discussion to Photoshop forum.
Moving discussion to camera raw forum.
I've downloaded the update, but cannot seem to get it attached to the program, they're not getting embedded somehow. Any ideas?
You're not supposed to "embed" anything. You need to install the Camera Raw 6.7.1 plug-in strictly according to the very specific instructions for your platform, Mac or Windows, given on the download page.
Please note that later versions of Camera Raw (higher than 6.x) will not run on CS5. Make sure your specific camera model is supported in 6.7. "CR2" means nothing. Every Canon camera model generates a different flavor of CR2 files.
If your camera is one of the many newer models that was not supported in CS5, you will have to look for the free, stand-alone Adobe DNG Converter 8.1 or 8.2RC, download it, install it, and then run it in order to convert your raw Canon files to raw DNGs you can then open in ACR 6.7 hosted by CS5.