I wasn’t aware that Microsoft didn’t include the Telnet client by default on all Vista installations until i needed to test some things with my new router and the open source firmware i choose to install on it.

So, to enable the client you just need to follow this easy steps:

1. Go to Control Panel - Programs
2. Under Program and Features click Turn Windows features on or off
3. Thick the checkbox Telnet Client
4. Click OK and wait for the installation to finish

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