I am trying to learn how to process a RAW file in Photoshop CS3 on my Macintosh, but I am stuck. Heres what I have done so far: -Installed a new camera RAW plugin I downloaded from the Adobe website, (I read somewhere I had to do this). -Imported my jpeg & RAW files from my Canon Rebel Xsi to iphoto. I then move them to an album in iphoto with my name. Now from here I am stuck. When I am in PS and try to open a file I can't find my pictures anywhere. I thought I could drag the RAW file from iphoto to my desktop, and then PS could find it, but when I try this my computer changes the RAW file to a jpg automatically. What am I doing wrong?