Weatherstrip on the outside just pulls off, get a flat-blade screwdriver
under it at the end carefully lift up, and work it off. It secures to the door skin using an integral black plastic inner strip. The weatherstrip on the inside has a tiny screw buried at the very end. Your window will
need to be down a bit in order to get to it. Once the screw is out, pull this piece off in an upward fashion as well, but it attaches with a series of metal clips so pay attention to them.
Installation will require window to be all the way down, and once fitted into place, will take light persuasion with a mallot to get them both seated correctly.
-M