I am editing some photos for a friend and have a few prints which I have scanned. She wants some enlargements and the scanned photos have too many artifacts for a nice print. She has a photo cd from Costco which has the originals of those plus several others but when I put the cd in my Macbook all I see are various windows files (exe, dll, etc.). I don't see a file containing jpegs. Any way to see these on my Macbook?