Hmmm I wanna go to your HD!!! I went to two in my area, and at both, I was met with looks of confusion when I asked for something smaller than a 2x3. Those basement ones sound good, except I think I will run into the same problem I have been with other house windows, and that is the depth as you guys mentioned. I think I have decided to go with making my own from acrylic (is that plexi glass?) They will be hinged at the top, and then swing open. This will also make it easier to have them open in the rain. I ordered 7 peices of this stuff..
http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5Fname=21314&product%5Fid=10477 in a variety of sizes, for $30+$8 for shipping. My original plan was to make my own, but I couldnt think of a good way to open them from the inside while having screens, but have that figured out now too. I have a pile of spare 2x2's for framing them, and Lowes gave me a huge pile of "damaged" (only one was broken) window screens for $10, that will be more than plenty for all my windows. Thank for all the good info!!

( there is a good chance I will regret making my own!!)
