Thanks for that suggestion, dhn. I downloaded the GPSBabel program in an attempt to convert Discovery's Wal-Mart file. I was immediately confused as to whether to try GPSBabel.exe or GPSBabelGUI. I tried both and the first screen of each total threw me. Didn't understand a thing they were asking for. I now can better understand what Obama meant when he said "it is above my pay grade". ;>).
Guess I'll just stick with the TT POIs that are available. Thanks for the help, though. Wm.