I used to sell GPS units, mainly for marine use. Many could handle *chips* that had navigation charts on them. I sold what was at that time a top of the line unit to a guy with a 45ft boat. He had it installed professionllly. All was right and good with the world, or so I thougt. I had told him MANY times as I sold him the unit to ALWAYS check his route against *real* charts before he left and ALWAYS remain behind the wheel. WELL, guess what? He put in a route, did not check it, programed it into his auto-pilot and left port. When he was out of the harbor into open waters (Lake Erie) he set the auto-pilot and went down below for a few too many drinks. He and his 45ft boat plowed straight into the island that he forgot to plot around. He tried to return the unit as defective. (after he got his broken arm set) His big mistake was tellling me the entire story BEFORE he said he wanted to return it. I did not make the return on the unit and got an *A* for not laughing until the jerk left the store. Layoutshooter