KICQ is a new server (replacement of the old one) that allows you to use old ICQ clients!
Go to http://v1m.ru/kicq and choose the UIN you like. Enter your email and you will receive a confirmation message. Follow the link and after that you will receive another message with a password.
Download QIP 2005 or another old client you like and in the connection settings change server to 126.96.36.199 and port to 5190