Mikrotik issue

Please any body there to help me. i have a question that whenever i suspend my client due to non payment in mikrotik so then client donot know why he is suspended and he calling for troubleshooting, so i want something in mikrotik whenever client is suspended and he start browsing so a single and only one webpage should to display and inform to him that he is suspended due to non-payment.

User HotSpot for it,
http://www.mikrotik.com/testdocs/ros/3.0/pnp/hotspot.php

Modify login page and put the information for non-paying users.