Ron Hazelton shows a great way to bring the outdoors indoors with a garden window. First remove the existing window. Pry off the exterior trim and remove the old window framing. Build a new frame for the new window with 2x4's and shims. Trim away any exterior siding if necessary. Use waterproof flashing paper and caulk to make the new window watertight. Install the new window into the frame with rust-resistant screws. Add another run of caulk, then trim off the excess flashing paper. Use another run of caulk under the new exterior trim, then enjoy your new plants.