How do you program a RCA universal remote control to a tv without the guide or intructions?

i have a RCA universal remote control i want to program with a zenith tv.How do you program a RCA universal remote control to a tv without the guide or intructions?
Go to the RCA website.. www.rca.com they list the remote models.. and step by step instructions for code searches there..How do you program a RCA universal remote control to a tv without the guide or intructions?
I have one 3-digit code for Zenith; # 001


I have 5 four digit codes : # 0017, # 0463, # 0178, # 0016, # 0092.


I hope one of those works for you.
there is a website cant remember what it is but go to google and type in ';universal remote codes'; and see what you find