I need help finding a web site

Ok I need to get a digital picture from a satelite I guess. I know there are website's out there for this specific perpose. I have tried Mapquest, digitalglobe, airphotousa and globexplorer. Nither of them have an online place for me to search for this photo. If anyone know's of a site that does what I am looking for and is cabable of giving high quality picture's of a certain location and can zoom in well please post the web address.
Thank you,
Drury