Trying to boot etc from an external CD Drive may present all sorts of problems, especially if your laptop happens to be Fuji and your external drive is something other than Fuji - that is just a 'for instance' sample.
I can't load any software onto the computer with the DEVD/CD drive, but oddly enough I can play my videos films with it. Yes, Technotiger, it is a Fuji and thanks for the tip. Unless I am mistaken, I guess you all agree that I should play it safe and simply replace the internal drive and not to fuss with an external drive. Thanks for your help everyone.