Hamachi

Think - LAN over the Internet.

Think - Zero-configuration VPN.

Think - Secure peer-to-peer.

Access computers remotely. Use Windows File Sharing. Play LAN games. Run private Web or FTP servers. Communicate directly. Stay connected.

If you need this, you need THIS:

With Hamachi you can organize two or more computers with an Internet connection into their own virtual network for direct secure communication.

Hamachi is fast, secure and simple. It is also free.

http://www.hamachi.cc/