I can't help with your version of PS. Whenever Canon (or any camera manufacturer) releases a new camera with a new file format, they usually inform adobe of the file structures and Adobe comes out with a fix for PS. They don't normally release updates on software as old as yours, so you're stuck using the software that came with your camera. You can use DPP to open the raw files and you can see the shooting info by clicking on "file" and then "info". You can also edit the files with DPP and then "convert and save" as jpg files.
You can use a freebie called Opanda to view the exif data in images whenever it hasn't been deleted from them. Here's a link where I posted the download info:viewtopic.php?f=7&t=2031