cocoa n cocos2d orientation issue

i have a project name combineGame. in which i am combining all my games using carosouel.. all my apps are working great, my project is in cocos2d. but when i am trying to integrate my game which is in landscape mode, builted in cocoa, i ve faced an issue... my game orientation is changed , it shows in portraite mode... while my project is also in landscape mode but it is not showing cocoa's landscape files in right orientation.. i ve tried much through internet but in vain.. any help is appreciated... thanx