The JP1 cable does not normally come with the remote. In the Yahoo JP1 group, there is a list of places you can order the cable from.

You didn't say which model remote you have. If you have a modem upgradeable model you can use some of the JP1 group's resources by WAV file and avoid buying the cable.

In the Yahoo JP1 group, there is an upgrade file for a Cyber Home 500 DVD. If that is a compatible model, most of the work is done for you.

You don't need to become a remote techie, nor "live here" to add an upgrade to a remote.