best freeware parental filter *www.techsupportalert.com/more/extended.htm#78
Porn Filteris an Intelligent porn sites block software!It has a special Intelligent Porn Content Filtering Engine.Just install it without any setting,it will auto block all porn websites smartly.It doesn't care of which kind of webbrowser you use,it can works fine with all kinds of webbrowsers.
Download Link: *www.netdogsoft.com/netdogpornfilter.exe
this and more about KidRocket is a FREE Kids Web Browser and Frostzone KidSafe here at *www.thinkdigit.com/forum/showthread.php?t=28869&page=2&highlight=filter
also check *www.thinkdigit.com/forum/showthread.php?t=41930&highlight=filter for some useful tips on how to block sicko sites.