HI,
I'm by no means a Continental pilot (unfortunatly ), but I figured the search engine isn't applicable for you yet so I just searched a few threads for you. The topic has been discussed several times.

http://www.airlinepilotforums.com/sh...highlight=guam
http://www.airlinepilotforums.com/sh...highlight=guam
http://www.airlinepilotforums.com/sh...highlight=guam
http://www.airlinepilotforums.com/sh...highlight=guam

Hope this helps you a bit.

-Jakob