There are inexpensive ($85 to $100) slide copiers available. Stand alone units that plug into the PC by USB, take the slide and copy it and then is saved to the PC. The best thing Ive seen is a slide copier that is like a filter that screws on the front of your lens. You just point it at a light source (an overcast day is perfect) and shoot a copy of the slide. Its fast and gives a pretty good copy.