they just sit in a grove thats a pain to get them into, best bet is winding down the window nad actually pulling the whole plastic trim bit off on the outside its hard to explain heres a detailed drawing lol
the black bits either side of the light blue bit (glass) are the plastics either side of the windows,
the door has like a hook going on so you kinda have to put your hand insde the bit where the glass slides and pull the hooked plastic bit out with your fingers once you got about 1" of it unhooked just pull up and the rest follows
the orange bit is the door rubber
if you dont have no clue what im trying to eplain then i cant help you no mre as its hard to explain ive done it as a cut section of the door