anyone knows how to activate 14 day free trial of battleground europe? i dun know how couse it says i need a credit card but i dun have a credit card

http://www.wwiionline.com/scripts/wwiionline/index.jsp here`s the linky to the game

its very cool you can play on land as a soldier or in a vehicle , in air in fighters and bombers and on sea in boats , destroyers etc