Today I got the good VPN service which provide the tottaly free access. Its Hamachi VPN from LogMeIn.Inc.
 
LogMeIn Hamachi² is a hosted VPN service that securely connects devices and networks, extending LAN-like network connectivity to mobile users, distributed teams and business applications. You can easily create secure virtual networks on demand, across public and private networks.
 

The program can be downloaded, installed and ready to be used for entering public Hamachi networks
 
Another advantage of Hamachi is that it is very easy to install. For anyone who has spent hours trying to configure an internet connection sharing setup between two computers, it is a blessing. No more complex instructions in Microsoft's webpage or hard to read setup procedures. Just install it, follow some simple instructions and that's it.
With Hamachi, internet sharing is as easy as a couple of clicks. You won't have to worry anymore on configurations. And, believe me, there are occasions in which you wish you could establish a successful internet connection sharing. So, forget about security and configuration issues