The MTL connection model currently only supports a 32-bit VPN client on Windows, but many users these daysare using64-bit Windows; to circumvent this limitation the following method is suggested:
The work around to solve the 64-bit OS issueis to install Virtual PC 2007, a free Microsoft Download of a Virtual Machine. The 32-bit VPN and Putty can then run inside the VM.
Link to download the Virtual PC:
Alternatveily if you are running a flavor of Windows 7; Windows Virtual PC in Windows XP Mode, may also provide a solution: