I am new to the iMac world. I have been a life long PC user. My question is, on my old PC I could make a file hidden by right clicking on it and checking the hidden box. Is there a way to make a file hidden on a Mac? I am always working on projects that I don't want my roommates to see. They always steal my ideas and work. Thanks for the help. BTW, I have the new 27" iMac with Snow Leopard.