The British Virgin Islands (BVI) is one of the top wreck diving sites in the
world.  Hilights include the RMS Rhone and Chikuzen.  I have the dive guide
by Linda Sorenson.  Here are links for a few of the dive operators:

http://www.scubabvi.com/
http://www.divebvi.com/
http://www.bluewaterdiversbvi.com/about.html

BVI is even more famous for great sailing.  The definitive cruising guide is
the book by Nancy and Simon Scott.  We're headed there for a sailing/diving
adventure in February.  We're flying American Airlines from California to St
Thomas (USVI) via Miami.  We take a ferry from St Thomas to Tortola (BVI).
Another option is to fly to Puerto Rico rather than St Thomas.

Here's a good website for travel info:
http://www.traveltalkonline.com/forums/postlist.php?Cat=&Board=bvi

Have fun,

Brien