Ask your scanning questions on DPUG or one of the other digital friendly forums. The powers that be don't like the digital questions to pollute APUG.
Getting a slide projector is a great idea, but if you want prints from slides these days you will need to scan and print digitally. The best scanners are drum scanners. Look at http://cheapdrumscanning.com, and if you have more questions ask them over on DPUG and I'll try to help you there.