Being a Child Star

I am needing to find out if anyone in blog land can help me. I am interested in getting my son started in modeling and acting. He is very photogenic and has a wonder personality. I have search the web for some local agents and some talent shows. I would like any advise anyone could give. I am afraid that if I go to see an agent I wont know what to ask or look out for. I have contacted a few stores such as Target and Sears to see how to get him in the ads and was told I needed an agent. Help Help and Help.