How do I move contacts from hotmail address to yahoo.ca address?

You will have to individually enter them on your own. A good way is to go to your hotmail addresses and print them out. That way you don't have to go back and forth from one page to the other.
How do I move contacts from hotmail address to yahoo.ca address?
email yourself @ your new addy and forward it to "all your friends"- you'll have a list of all of your contacts, which you can add- and all your friends will know your new addy