Yeah i second this motion. Plywood the whole window opening and put a vent like this in it.Those windows are removable - I'd remove it and replace with a piece of wood w/ hole cut in for exhaust tube.
Good Luck!
Million ways to skin a cat. I think this guy might just need some help from someone who is a bit of a "handyman".There was a video on youtube where the guy opened the window then attached a bar to make sure it stayed firmly fixed, then added plywood to block the light and then a hole for the venting