How to setup PPTP VPN on MacOS X:
Click the apple logo, and select System Preferences
Click on the Network icon under Internet & Network
If you see a locked padlock in the bottom left, click on it. Otherwise skip to step 5.
Enter your password in the dialog box
Click on the little + icon just above the padlock
Select VPN From the interface drop down.
Select PPTP From the VPN Type drop down
Enter the name of the company you are connecting to, and click Create
Enter the Server Address and your username. Also check the box that says Show VPN status in menu bar
Server address must be exactly
as in your account data (without http://, www or any other symbols)
Click on the Authentication Settings button, and enter your password
Click Advanced button and tick 'Send all traffic over VPN connection'.
Almost done. Click the Apply button to save the changes.
In the top right of your screen, click the token icon that looks like this. From that, a menu will drop down. Click on the Connect link for your company name. This will initiate the VPN connection.
If all is well, after a few seconds you will be connected, and a timer will start showing you how long you have been connected