It's not quite that easy but Jeancart did lead me to the solution. Once you press "set" under the dialing pad, the "up" and "down" keys on the right bank of the facia of the phone will scroll you through a menu. I never did see the dialing mode but when I replaced the batteries and plugged the phone line in, it worked. So, I guess I did something right. Hooray!

Ed Locklin at mp367.

I BROUGHT THIS PHONE TODAY AFTER PLAYING WITH FOR A WHILE I TOOK THE BATTERIES OUT AND LET IT SIT BATTERIES MUST BE NEW BEFORE YOU PLUG IT IN THE 2005 OR 2006 SHOULD BE ON THE SCREEN PRESS SET AND YOU SHOULD SEE THE FIRST SCREEN THEN JUST PRESS THE UP AND DOWN THE SET EVERYTHING AFTER THAT. SHOULD BE PROGRAMMED BEFORE PLUGING IT INTO THE PHONE LINE.