Okay well my first writing thing. Anyway this I'm not sure this is a cheat but if your interested in the koopa kids they all hhave different names in the dvds and the games.I'll type them down here starting from number 1 castle

Game-----------------DVD
1 Iggy Koopa Hop Koopa
2 Morton.Jr Koopa Big Mouth Koopa
3 Lemmy Koopa Hip Koopa
4 Ludwig Von Koopa Kooky Von Koopa
5 Roy Koopa Bully Koopa
6 Wendy.O Koopa Kootie Pie Koopa
7 Larry Koopa Cheatsy Koopa

And there you have it I look forward to helping in the future

When you enter donut plains be sure you have "Feather Mario" when you enter the first ghost house.(not the secret one) When you enter it one until you reach the first hole. Then turn around and fly as high as you can above the point you started the level. You will discover a secret path on top of the level that ends with three lives and an alternate exit. The alternate exit brings you to an area north of the ghost house. In this area you can get a Yoshi, a life(if you already have a yoshi), Feathers, and Fire Flowers. This level has no enemies and no time limit and the entire level is the size of your screen.
I hope this helped!