Babysitting software?

I've got young children who have been using the internet for research, etc. and I'm a little worried about them stumbling onto pornography. I've heard of programs like 'Net Nanny' and 'Cybersitter' but I know anything about them.

Does anybody have any input on these types of programs, ie - do they work, are they freeware, etc.

Any help would be greatly appreciated!

adam

Yeah, there are effective programs that filter adult contant. McAfee Guard Dog is really good, I had to install it on my bothers machine a couple of months ago. It was $19.99 at Costco.

you could use Zonealarm and block sites. it's not what you want to, but it helps