You're not alone!
http://www.scubaboard.com/showthread.php?t=15930
http://www.kasperfarm.com/scuba/index.html
http://www.scubaboard.com/archive/index.php/t-89331.html
http://www.scubaboard.com/archive/index.php/t-63401.html
http://www.scubaboard.com/archive/index.php/t-82788.html
R2