Great article form the Hometown Annapolis newspaper detailing the steps you can take to keep a room cool:
Turn on the ceiling fan
Go from Auto to On for your AC fan only
Apply window film to windows
I agree with all the suggestions; however, I would rank the window film slightly higher to #2. The reasoning is that the money spent on electricity can never be re-couped. Whereas the money spent on window film can be earned back within 2-3 years by

