I've done this twice myself.. From my experience its best to get the window all the way up (if it's not) then tape it up there using the top of the door to secure it there. You never really have to mess with the glass at all this way.
The new motor will come with 2 rails, cables and of course a motor all connected and ready to go. After you remove the 7MM bolts from under the interior lift handle (under the pop off plate) and under the window/lock panel.... and one more under the panel on the other side of the rear view mirror if I recall correctly.. You should be able to lift the interior door panel straight up, DON"T try and pull it towards you! You will still have to disconnect the interior light from the door panel once it's loose.
After its out of the way... there are 4 10MM bolts total, that are attached to each rail, one on each end. There are also 2 vice like, coated, smash plates with a 10MM bolts that grab the bottom of the window. After removing all 6 the entire assembly should come out.
WITHAC, I'm sure yours if fixed by now but this may help someone else that is leery about trying it. Really easy, no special tools and about 20 minutes.