The best way is simply to msg the website address to them when they type !schedule:

Code:
on *:text:!schedule:#yourchan: {
  msg $nick View the schedule at http://www.yourhost.com/
}


Alternately, if you could get the visitors to use the script, you can just have THEM add this:

Code:
alias schedule {
  run http://www.yourhost.com/
}


Replace the website address in either one that you use. Also, replace #yourchan to be the name of your channel. For users who use the second one, they can use it by typing /schedule (/ instead of !).

Invision Support
#Invision on irc.irchighway.net