Hi Victor
There is a Whitepaper on our website that will give you an understanding how WinGate VPN works and show you common VPN scenarios.
You can find this here
http://www.wingate.com/resources.php
In your case you would need to set up:
1. WinGate VPN on a machine at the office (that you will be connecting to from home) with an Internet connection.
2.WinGate VPN on the machine at home.
After configuring access etc on the Office PC, the completed VPN config file should be imported into the WinGate VPN on the home machine.
With these details the home machine should be able to establish a VPN connection with the Office WinGate VPN machine.
Obviously all of this is explained in depth in the WinGate VPN helpfile.
Hope this helps
Erwin