From ExtremeTech ... Secure Surfing to Go: VPN Made Easy.

The article is about establishing a virtual private network with two or more computers on the Internet, using beta software from hamachi.

It looks interesting, but I honeslty haven't tried it -- I have VPN-like functionality using WinSSHD from Bitvise. I'm very happy with it and have had great success using it. Only trouble I've had really is that a Windows account associated with WinSSHD had it's password expire one time when I was on a trip. (That was a fun phone call home trying to explain to my wife how to log into our Windows 2003 Server, open the software ... ).