Speaking as an archivist, if the originals are important to you get them out of plastic. It off gasses and that just isn't good for anything of value.
I go along with a tripod mount or other kind of copy stand and a digital camera set to its highest resolution. Zoom it in so your photo fills the frame. If the photos won't lie flat a small piece of glass placed on top will do the trick. Just be sure to keep reflections off it. Save your new photos in several places: on the computer, an external drive, thumb drives, DVDs, memory cards. Not only will having them stored in several places prevent the disaster of losing your only copy, it increases your chances of one of them being able to be read in the future if you forget to migrate to new technology. Oh, and don't forget to migrate to new technology.
Fulltiming until I have seen everything I want to see, it isn't fun anymore, or I run out of money. Let's hope it's not the last one.
Cruisingat60 blog.