and signing up for an account to turn on their content filtering. This is free by having ad-supported search suggestion pages when you do a typo in the address bar. It also has paid accounts if you don't want the ads.

Only in Windows Vista and 7, since Microsoft don't have any incentive to backport the ability of non-IE apps accessing that feature to XP, as it won't them more money in OS sales. Alternatively, I suggest switching your DNS servers to [http://en.wikipedia.org/wiki/Opendns#Servers OpenDNS] and [https://store.opendns.com/get/basic signing up for an account] to turn on their content filtering. This is free by having ad-supported search suggestion pages when you do a typo in the address bar. It also has [https://www.opendns.com/start/ paid accounts] if you don't want the ads. They have [http://www.opendns.com/support/videos video tutorials] and [http://www.opendns.com/support/article/251 frequently asked questions] articles.

use k9 web protection it's free with no ads: [http://www1.k9webprotection.com/]