Gravity
After you have used the extra lives cheat, press pause during any level, and hold down buttons 1 and 2, then press 4, which will lower either the gravity pull and/or wind. However, the gravity has to be of at least a 2 rating in order for it to be lowered.
Lives indicator increase
During any level, press pause, then press buttons 1 and 2 and hold down button 4. Keep holding four down in order for the lives indicator to increase.