Only problem with Sygate is it keeps on popping up messages saying the connection was blocked even when you tick "don't show this message again". Anyone know how to stop that?
you can also edit your hosts file and put IP 127.0.0.1 for the site you are trying to block. Obviusly, if a user knows what they are doing they can reverse the change.
If you have a router some (DG834GT) allow you to block certain web sites.