How can I cut a door gangway where on earth a fanlight is? My house was added on until that time I moved in...

My house was added on until that time I moved in and in attendance is a window between the dining room and the sun room. The porthole is lined contained by knotty pine. How can I take the glass out and continue the cut to the floor so I can formulate a passageway from the dining room to the sun room?
Answers:    It really depends on a few more things than that. Although the investigation for utilities is a must.
A few other things to consider is the the breadth and elevation of the exsisting window crack in relationship to the potential exotic door.
Easiest thing to do, if the sunroom is safe and sound and weathertite, would be to demo the window and check the rough channel width and altitude from the floor. Then purchase door accordingly. You may find you`ll enjoy to do some building in depending on the size of the topical door.
First carefully pre-investigate whether you enjoy wiring or conduit or some hold-up in your roadway. If not, simply snap a stringline the dimensions of the opening (taking thought for a little tolerance), after use the appropriate tool, (like an electric sawzall) to cut into the wall. Stay on the chalkline and continue until your done. Then frame the introductory and perhaps make a payment a pre-hung door frame from Home depot.