Thanks for the encouragement everyone! Photography is a passion of mine.
I use a Canon Digital Rebel... I love this camera... just got it in December. I waited for an affordable digital SLR, and this camera was worth every penny, coming from someone who had a hard time making the jump from film photography to digital.
My underwater shots are with a Sea&Sea MX-5II. I used 400 film processed with Kodak's Perfect Touch and scanned the prints on my HP printer/scanner. I was surprised at the clarity after scanning.
Thanks again. It's fun to share such a great trip.