Pics really help a lot in regards to us regaling you with our knowledge...lol
Windows in essence are poor growing spots for cannabis {some have done it mind you} and takes a lot more work. Getting them outside or inside with ample light is your best option, depending on where you live I would have to say that's it too late in the season for outdoors though, so focus on getting a indoor set-up. And I suggest reading the stickied threads, they will give tons of info on what type of lights/soil/nutes will work best.
Good luck