Need some help,PLEASE

Hi everyone,well i finally did it,i lost my last key to my "07" 4runner. I've been reading post on making duplicate keys and reprogramming remotes for keyless entry but not for my year and model. What i'd like know is (1) Is it possiable to make duplicate keys using the vehicle if i decide to bite the bullet and go to the dealer for just one key,if so,will i have any luck using aftermarket keys? (2)are there procedures for making duplicate keys and for reprogamming new remotes available.THANKS for any help