need help plz....aim crosshair
 

lo all...i want to make an aim crosshair wider than usual so i can calculate the shot on a moving target with markers..but its set to 15x15 pixels and even by making the canvass wider the game wont allow it..could any 1 plz help me in finding the file i need to edit to allow my size of 30x80pixels..plz help..thanks all....