Wow! I guess the fact that I said I can't do projects that cost money got me motivated to finish the framing in the kitchen since I already had the wood.
I'm not going to give you a detailed tutorial on doing this, since everyone's windows will be different.
But, what I will tell you is that I made the ledge first, then made the top and then the sides. I did it like this to make sure the measurements were accurate. All three windows were not exactly the same (of course).
The framing is actually not nailed in yet, I still need to pick up some shims to level the ledges and square it all up. I highly suggest not skipping this part, it will affect the square of your molding.
Obviously there is more to the project, but let me tell you, I feel such a sense of accomplishment since this project has been on my mind for about a year now (ok, maybe for 5 years, but I never thought I could do it until about a year ago) Now, I at least know that it will get completed...eventually (: