Ask Walmart what format they are in, post back and we can answer.
I looked it up for you, read on, last paragraph is specifically about Mac.
Photo CDs Overview Photo CDs - Overview Create a Photo CD containing up to 512MB high-resolution digital photos from any of your own albums. You can assemble multiple CDs one at a time and order them all at once, Or just order a single CD for yourself.
Along with your photos, each Photo CD comes with Windows-compatible Digital Photo Manager viewing and photo-editing software. Use this software to:
- Make more prints or enlargements in just two clicks, and place the order online.
- Edit or enhance your images with ease: remove red eye, use design filters, adjust lighting, and more.
- Compile all your photos in one place, add comments for easy searching and quickly transfer them to a CD or DVD.
To use the Digital Photo Manager software, your computer must be running on Windows version 98, ME, 2000, XP or Vista, and it must have at least 100 MB available hard drive space for installation.
If you use a Macintosh, you can view the JPEG photo files on the CD using a web browser or other photo-viewing software, but you will not be able to run the Photo Manager software.