Filename: safechat.exe, 4.3Mb
Type: Shareware. Free to try, $34.95 to buy.
It's not a complete solution but it goes a long way. Safe Chat with Parental
Controls is a universal messenger that support MSN, Yahoo, AIM and ICQ network.
The parental controls features let the parents block other messengers, mask foul
language, block web based chat sites and set chat access hours.