I have Raw
plug in ver. 3.7 and I can't open canon raw files for canon 5D pro II .
Aside from the fact you are adding your post to a thread over 1.5 years old (better to start your own) this topic has been heavily covered in this forum.
You need to convert the files to DNG using the free DNG Converter available here or update to Photoshop CS5.
Thank you!