Here is a way to get lots of lives without cheating. Complete the first level, then go back in and get to the halfway barrel and press Start+Select. Go in to the level, and, making sure you have Donkey Kong out, run to the left and jump on to the big Kremling. When you are in the air after jumping, keep pressing jump and you will land on the tree where there will be a balloon. This can be hard to master. When you've got the balloon, roll off the tree to the right and press jump. You will land on another tree with a balloon. Then go back to the start of the level and get the balloon in the tree house. When you get out, hop from tree to tree by rolling off and jumping in mid-air. There are three trees with balloons (red, green and blue balloons), and once you get them, run back to the banana hoard. Go in and then out and the balloons in the trees will be back. You can do this as many times as needed.