I'm planning a pacific dio, with a shelter tent made from the tarps from the so-called 'making realistic tarps', but i'm searching information about the iron stucture of a tent/field hospital, plus I dont know how to make a pacific enviroment :s

(I know, my english sucks)

actually your english was perfect, no mistakes at all.

on the tent topic:
i think this will quite help you:
http://home.att.net/~steinert/wwii_medical_tentage_and_related.htm

some photos of the inside, maybe even some ideas for the scenery:
http://www.rogue-publishing.com/51st/nurses/51st_nurses_history_by_tillie_kehrer.htm

just did a little 2 minute google research. hope it helped!
Doed.

Do you know the game MoH Pacific assault?
I wanted to make a situation like that:
a tent, barrels, trash and supplie tarps
http://www.ea.com/official/moh/pacassault/us/components/sshotpopup.jsp?setID=Airfield Ambush&imgID=4

feedback?