Give this option a try. If you do it correctly, nothing can go wrong. First hit Alt + R, then go to File - New. Next paste the following code
Code:
menu menubar,status,nicklist,query,channel {
  Msg Timer
  .Start Message:{ set %t.message $$?="Enter Message To Display" | set %t.seconds $$?="How Many Seconds Between Displays" | timerMsg 0 %t.seconds amsg %t.message }
  .Stop Message: { timerMSG off }
}

The usage is simply right clicking in the channel/menubar/status finding the Msg Timer tab, and then clicking Start Msg. You'll get a couple popup's asking for the message to display, and then how many seconds you want the messages to be apart. You're also able to use ctrl + k in the message prompt to add color. When you want to halt the timer, simply click Stop Message. Hope this does what you're wanting. And if you have any further problems, just reply.