I am adding some articles on digital underwater photography to my website. The first two are done and ready for use. The first is a hands-on comparison of the three housings available for the Olympus C-X0X0 family of cameras. The second is an overview of the strobes currently available for digital underwater photography and details on using my strobe of choice, the Sea & Sea YS-90DX.
http://www.digitaldiver.net gets you to my home page. Follow the link to Digital Photo and the links to the two articles are there. More will be added over the next few weeks, so drop by often.