Thanks again for all the suggestions.

I want to keep the kids from browsing the internet entirely. Here's what I did - I turned off IE 8 as logicearth described. I loaded Firefox for my own use and then denied access to Firefox for all other accounts.

I tried to turn IE 8 back on from the kids' accounts and it appears that Win 7 prevents that from happening. We'll see how that goes. My oldest is 14 and very computer savvy and, if there is a way, she will find it.

Thanks again for all the suggestions.