I just sprung for LogMeIn Pro so I could do file transfers from home. I really like the remote control function. It is fast, too, but I do have DSL over the phone line. I know it is encrypted, but I couldn't tell you the specifics.
They are having a special: 5 PC's of LogMeIn Pro for $19.75/month.
https://secure.logmein.com/home.asp?lang=en What all are you wanting to accomplish with it, Paul?