Does anyone know of any program thats?

does anyone know of a program out there that maybe freeware or not were it will protect my information like user name pwords and form data encryption so others in the network as in wifi internet connection so they cant see my personal info when its sent throw. I value my privacy. when it comes to sites and user names and pwords. Im not looking for a spyware program or a virus scanner just something that protects your info from network snoopers. there is one calleddintig is one but it dont work with vista 64bit or maybe vista itself even i know that for sure.