Ok, I have become somewhat paranoid recently about personal information. I am in a dorm, and frequently let friends use my laptop to do email, instant messaging,etc. . Because of this, and the fact that I am not always sure if they are telling me the truth about not downloading items or snooping through my files, I was wondering if there is a good file/folder encryption software for windows. I already have an anti-virus package and software and hardware firewall, so all I really need is encryption currently.

thanks for your help