I have a basic Zenith Remote, but cannot locate a part number on it. It has options to control SAT, CBL, TV, VCR & DVD. It has no code entry button and I cannot figure out how to enter a set up code.

I have tried hitting the component button & then holding down ENTER & 0 button as I have read on this site, but that doesn't seem to work.

Does anyone have any ideas on how to program this?

Thank you.