hello everybody...I have clients with broadband connection (username & password) and some others with static ip and they have different days of payment ... so how can i remind them for 5 minutes about the payment? especially those with username and password..its a big help for me ...thank you

Just setup http://wiki.mikrotik.com/wiki/Payment_Reminders and it worked a charm and very effective when the client has payment reminder web page on their browser?