Darren pointed me to an article on Lifehacker on setting up Hamachi, what looks like a nice and quick VPN tool. Not exactly the industry strength stuff you would want to connect your satallite offices (for that you'd probably go openvpn or freeswan), but for getting into friends machines for maintenance, or a quick an dirty connection to surf pr0n from home from work it sounds like the way to go. Win/Linux/Mac as well which is nice.