I don't know muh at all about macs. A client has a bunch of dual boot macs - they have windows vista and mac os installed. some boot right into windows (maybe they don't have mac OS on those?). Some though, you have to hold down the option key right at startup, you then get 2 pictures of hard drives 1 is mac and 1 is windows. you click on windows and it boots into windows. if you don't press the option key and choose windows, it will default to mac OS. is there a way to change the default OS to windows?
By the way, is that boot camp? or is bootcamp something else? I don't see any markings about bootcamp. Just a dual boot imac desktop.