If you are looking to create private network then you can try using Remobo. With Remobo you can easily create an Instant Private Network between users. You can use this applications to share files with your family and friends. All you have to do is just login from your computer and add your friends and Remobo will create a secure IPN between the two computers.
With Remobo you can remote control your computer. So you can access your files easily from anywhere. This is a free software so you can save a lot by replacing it with your VPN Software. With Remobo you can create a virtual private network (VPN) instantly and securely. You can also play LAN games over the Internet with your friends. You can also run other 3rd party application on top of Remobo.
Remobo is available for both Windows and Mac OS X.