Originally Posted by Quickdraw

Have you ever used Tools>>Internet Options>>Content>>Enable ???

.xxx is not needed to block porn. This tool is built in all modern browsers. Sites that aren't rated simply don't get through.

If that is too hard to find and use, parents can use this tool free http://www.parentalcontrolbar.org/

There is really no more excuses available for ignorance and/or laziness by parents and teachers alike.