Public Access PC

HI Folks,

We have a PC in the reception are of our company that currently allows public access, we are using a 'Cyber Sitter' program to restrict access to the net other than what is defined in the ciber sitters 'allowed' list. I would like to be able to loose this app as it doesn't work with IE7, is it possible to do what i need using Group Policy and if so how? I can't seem to get it to work, but i need it to apply only to this PC.

Thanks