Online beta testing of an interactive software program aimed at children

We are looking for 3 or 4 people to use and test a piece of interactive software that runs online, and is targetted at children aged upto 11 years old.We are looking for honest opinions about it (we'd rather hear about problems from testers than from customers).

We are not looking for children to test the software, but people with experience of testing interactive software, or with a knowledge of education. The user guide also needs proof reading against the software.