If this mac version is same as the PC version, there is a good feature for borderless printing. As you may know, borderless printing actually needs to enlarge the original image a little bit and thus you may loss some image in the final print. By using this "Easy PhotoPrint" application, you can move a window on the original image and select the desired print area you want to print on the final print. This is really pretty cool feature that iPhoto and Photoshop cannot do.