At first I thought that I might be OK with getting a new card. I thought I remembered pretty much all that I learned, but after surfing the scuba board, and your advice, that it wouldn't hurt a bit to go ahead and start over. Technology has changed over the last 20 years. It was a good class that I went through. Don't remember exactly how many hours for each stage, but I do remember I had a Navy diving buddy that was Air Crew. He was taller and a little stronger swimmer. I never will forget the last dive I went with him. I had the depth gauge and the watch. He swam away from me at about 100 ft. We had been browsing the bottom at that point and I knew we had to go back up. I caught up with him at 140 ft. Thankfully he followed. Ran out of air around 60 ft. Put hand up, kicked once and blew air all the way through the slow acent. Didn't bother me then, but I'm older and wiser now. Can't leave a buddy, but I can pick'em better. Felt fine afterwards. Was I lucky?