The solution - the all mighty duct tape, a few thumb tacks, a bit of screen and a bit of ingenuity.
Here's how I did it:
• Measuring tape
• Straight edge (or metal ruler)
• Duct tape
• Thumb tacks
Step 1: Diagram
Above is a diagram my father-in-law made to better visualize this process. (Obrigado Moacyr!;-)
Step 2: Cut Screen
Place the screen against the frame of your window, and then fold in half against the window. Mark your cut point with a piece of chalk or crayon.
When cutting your screen, you want to try to cut as straight as possible. This is where your straight edge or metal ruler comes in handy.
Step 3: Duct Tape Screen
When you are finished taping all the edges, run a piece of tape through the middle of the screen, on each side. This is the point where the screen will fold.
This sounds simple, but it's a tedious and time consuming process. The more patient you are, the better your final results will be.
Step 4: Thumb Tack Screen to Window and Frame
Before you tack anything, think about your order of operations. If you are working from the inside, and first tack to the frame, you wont be able to access the window... I'll let you figure this part out;-)
This is another time consuming and tedious process. The hard wood windows and frames I was working with are not intended to have thumb tacks pushed into them. I think for every tack I got pushed in, two or three bent or broke. This is where the lineman's pliers came in handy. Holding a tack in the pliers' teeth, and pushing, proves to be an effective way to get the tacks into the wood.
You can also try a hammer on the frame, but I wouldn't recommend taking a hammer to your window!
Step 5: Finished!
Above are a few photos of the finished product, inside and out.