C.L.
M. -- I see you've already had several responses, but I just wanted to throw another idea out there for you. If it is a standard window, you can order a replacement at Home Depot, Lowes, or another home improvement store. Then post on Craigslist for help installing it. In today's economy, you will most likely be able to find someone willing to do it cheep or for labor trade. If you have a lot of friends, you might find one who can do it themselves. It actually isn't that hard if the window is standard. You might find that less expensive than a pro. Good luck.