1. A method for providing an on demand translation service, the method comprising: making available, for use by a subscriber, a translation module including at least one language pair module, having an associated source language and an associated target language, for translating a source language to a target language; charging the subscriber a fee for use of the requested on demand translation service during a paid-for period, after which the translation module expires; receiving a video signal including information in the source language; obtaining the information as text from the video signal; translating the text from the source language to the target language by use of the translation module; adding translated information based on the translated text into the video signal; and sending the video signal including the translated information to a display device.