J.J.
Please DO NOT participate in ANY type of modeling/acting contests or listings that require any amount of money up front no matter what the money is for. They are not legit! Also some of them claim to not charge you for their services but they do require you to use their photogs and buy their portfolio packages or to go to their audition/prep classes and seminars. Those are almost always scams also. Keep in mind even real agents will of course need you to go out and get headshots. You will end up paying hundreds for a photography session as well getting the prints made. So there is a cash outlay with no guarantee of recouping your money. As someone already mentioned, reputable agents will not charge you upfront, they only operate on a percentage of your actual earnings (typically 10-20%). And yes, even the reputable casting calls and auditions can be stressful and time consuming, especially where kids are concerned.
Here's an answer to your specific question: http://www.michigan.gov/ag/0,1607,7-164-34739_34811-14083...
If you have any specific questions, feel free to message me. I am an actress and know many kids in the industry.