The Slice tool and Save for Web can work fine, but it's manual and only produces JPEG/GIF/PNG files. Also, the Slice tool can't deal with the minor rotations that are typically present when you scan multiple photos on a flatbed scanner.
The Photoshop command for splitting apart multiple photos in a single scan is:
File > Automate > Crop and Straighten Photos
Just have the scanned document open and run that command. Photoshop will split the document into multiple documents, each containing a different single photo from the batch scan, and as a bonus it will straighten out any rotations. You can then save each of those photos separately in any format Photoshop supports.
This works best if there's good contrast between the photos and the background, and if there's enough space between the photos.
Thanks a lot for the tip, but when I do these steps you mentioned, nothing happens ? I just get a pregrees bar that completes and nothing happens ?? Is there any else I need to do or a mode I need to be in ? Thanks
It's supposed to break up the bulk scan and leave you with multiple documents, usually as a set of tabbed windows. As long as the scan with multiple prints is the frontmost document, it should work. In your case, does it leave you with only the original scan, unchanged? If it doesn't work, the photos might have been scanned too close together or their edges might not have enough contrast against the background.
I did a quick movie of how it's supposed to look when it works right: