Adjusting settings for kids

Since I’m going to have a bunch of kids here for the summer, I’ve created them their own account. Is their a way to limit the programs (*cough*instant messenger and chat rooms*cough*) and browser options (clearing history, cookies, etc.) through the admin settings?

When I tried to uninstall Yahoo IM in the kids account it said it had to be done through the admin setting, and when I tried to run WebShots (which is already under start/programs) for the kids it wouldn’t run.

Is there something I’m missing, or need to do differently? Or is there a way to uninstall and reinstall certain programs under just Admin while others are for all users?

Becca