Hi Squirt,
I go to SCC at least twice a year. I can’t get enough of the place. Been to Cozumel 33 times. The best place to collect info about the dive resort itself is their website. Its very up to date. Don’t miss the webcam! http://www.scubaclubcozumel.com
There is tons of info about Cozumel online too and everyone has their favorite dive sites. Mine are Colombia Deep and Paso del Cedral, but there really are no bad dive sites in Cozumel. Even the shore diving at SCC is amazing and its free to everyone who stays there.
Are you traveling alone or with a group? You can pretty much get anything you want at SCC. Just tell them your preferences.
You might enjoy the trip report I put together a couple of trips ago. Its kind of photo-centric, but has lots of pictures specific to the dive sites.
http://www.underwatercolours.com/CZM_08_trip_report.html
Feel free to contact me if you have any specific questions.
Bonnie