LPG Fittings Required for Circumnavigation

[latogato]

Greetings All,
This is my first post on the forum, so please forgive any first time mistakes.

I have been told that getting your LPG cylinders filled around the world is a challenge at best. I have heard that exchange programs are more common than filling stations.

I am planning a 2 year circumnavigation that will begin in the Bahamas in Jan 2010, and I want to buy as much as I can (afford) in the US before leaving and having to pay importation duties etc etc.

Is there any information on LPG fittings and adaptors that will ensure we are able to eat hot food on our travels? We are not the first to circumnavigate, so I am hoping there is plenty of first hand advice available here.

Cheers
John