[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"MyFile.plist"];

CCSpriteFrame* spriteframe = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:@"imageName.png"];
           CCSprite* sprite = [CCSprite spriteWithSpriteFrame:spriteframe];