Yup it's not hard just be very careful in removing the windows, have lots of tape for the job,tape off the whole area at least 4in around the job (be supprised at how wild a razor blade or knife can get out of hand) and use the proper sealant on the glass, don't use silicone, it wont hold the glass properly after years in the sunlight, so spend the extra few bucks and use the right adhesives,also razor blades and knives, also wear SAFETY GLASSES, and don't forget the gloves and towels, also after removing the old glass clean the surfaces properly or else you will have leaks and the job will have to be done over again,it will take you a while so work SLOWLY and DON"T force things, done this before so I know what a job it will be, so just follow my suggestions and have fun. :-)