Unless someone happened to record that show, it will probably be difficult to find.
However, you could try contacting Travel Network and find out who made the show - I think they buy a lot of content from smaller companies who actually make the shows. They may be able to give you a contact name / number.
The other thing it to try a google search - any property developer who had their vacation properties shown on Travel Network would probably be advertising the fact on their web site. :iagree:
If you know where the property was do a search for Travel Network feature, vacation home, location and just mess about with the words to see if anything shows up.