Secure systems here with internet access run a copy of it. Many Microsoft systems run it too. Best Russkie software ever made, period.

And they even provide a freeware version for the general public. I don't have a link, but you can run a google search and find it easy enough. One of the webs best kept secrets.

Locks down all input/output and when running with Norton make a great team for secure surfing. Little learning curve...but not difficult at all.

Best thing to tell the folks is to switch OFF their computer when they are done especially if they have DSL/Cable or similar hook up. One can also set up Norton for them and make sure you set up frequent automatic scans. I wish Ad-aware had an auto option as that would help folks a lot too!

Good luck!