I have photoshop CS. I am shooting RAW images for the first time with my Canon 40D. Photoshop is not able to process the RAW images I have uploaded to my computer. I read that a plug-in needs to be downloaded from Adobe in order to process the RAW images. I downloaded the latest RAW plug-in from Adobe that supported Canon 40d. However, now PS states that the latest plug-in from adobe is incompatable with this older version of photoshop. My question is what do I need for Photoshop CS to be compatable with RAW images taken from a Canon 40D?