You can trigger the ad by putting a timer on the msg like this
set to play every 10 min

.timerad1 0 300 ad1

Code:
  [color:red]

alias  ad1 { 
  amsg 9,1-={8 %ad1 9,1}=- 
 }[/color]



Intelligence: It's better to ask a stupid question, then to prove it by not asking....