My model is a Phillips GR1. The following methods may well work for others as well: All done on TV, NO remote!
The GR1 has 40 channels...from 0-39. Go to channel 38, and press the + Control button. This switches off the Child Lock.
Next, press STORE followed by + Control. This starts off the channel search. each time it stops on a channel, press + again, until the picture you want appears. Then press Channel+ or - to pick the channel number where you want to store it. Finally press STORE.
Wildwood
January 2009