Just ask for just the rubber inserts from the dealer. They last longer than the aftermarket ones (in my experience), and you know they will fit. They use the existing pair of metal strips that ride in the groove in the rubber, so be careful taking them apart. For the rear wiper, you'll have to pull off the cap at the pivot point so you can raise the arm all the way.
Then clean the glass really well, let it get absolutely dry, then use Rain-X.