Image Files (how to change file paths "easily")

 I have imported a gedcom file and have been playing with the software. However I would like to move all of my image files but can not see a way to change all of the file path references easily. When trying to view the file path individually i recieve the error

"The file C:\... cannot be previewed. You do not have read permission."

I have upgraded to Census Deluxe, but still do not see a way to change file references easily.

Kind Regards