http://www.lawrencegoetz.com/programs/free.html

Not sure if you need the info after .com to get to the page, but it's a really cute place for younger kids. Some adult help is needed, but mostly just to help pick out what to do and how to get there. He does ask for you to spread the word about his site, but I've never seen anything bad there. But I also have a habit of clearing all my files, cookies and history before I close the browser. I've personally never gotten any spyware from this site.