Mik AA,
There is a lot of information about fuel Cells out there. Two mian sources to look for a product in your range would be
http://www.fuelcellstore.com/cgi-bin...b/view=SiteMap
and
http://www.fuelcells.org/
Both of these sources are pretty inclusive of everything there is in the fuel cell world. I actually work for one of these companies and would be glad to point you in a direction ( not trying to sell anything). Contact me directly and i am sure I will be able to help.