Is anyone interested in swapping a UHF mobile for one of these Kenwoods?

I have a Kenwood TK-980 800 Mhz mobile and a TK-760 high-band mobile. According
to a webpage I visited, I can program these radios through their front panels
without using a computer by pressing one of the buttons while powering up the
radio to put it into the program mode. This procedure will not work for me. Do
I need to use a computer or not? The website says that the up/down channel
buttons on the radio are used to program the frequencies, but none of this
works for me.