Open Control panel.
Choose Network and Internet connections.
Click Create a connection to the network at your workplace.
Select Virtual private network connection.
Enter a name for the connection.
In the "My Account" view a list of IP addresses PPTP VPN servers, Username and Password VPN.
Enter IP address of PPTP VPN server.
Select Add a shortcut for this connection to my desktop.
Connect to PPTP VPN on Windows XP.