These devices area available, not from ntl though. It depends on the type of STB that ntl provide as tehre area two different remote signalling systems in use. The standardish RC5 or IR system, used by the Samsung STBs, or the non standard IrDA used by most of the PACE STBs.
Your Sky stuff may well work with the Samsung box, if that is what ntl give you. Alternatively DigiEye, is what you will want
http://www.digisender.net/_Europes_N...r_Company.html