I don't know if this is the right way, but this has worked for me. I have the word document that had my original registration number saved on a usb stick. When i have used embird on another computer I have downloaded the demo,and have activated it by copy and pasting my registration number from the usb stick. I have never been able to do anything with the KLC file. but I have it saved everywhere in case I ever do work out what to do with it!! regards Suet.