macro scheduler?

language - ASP

I have a schedule calendar and I want it to send emails to users the day of an occurence from the calendar. The concept would be running a script every day and contacting all users with data for that day.

I can easily do this from an ASP page, but then I would be forced to manually execute that page every day. On my own server I could install a macro scheduler which would launch that page every day, but this project is on a shared server. I could use a macro scheduler on my server to execute a script on the shared server, but then I have to worry about 2 servers being down instead of 1. I can create a DTS package in SQL Server and schedule it to execute every day, but this project does not use SQL Server.

... any suggestions?