Sometimes just firing a reminder isn't enough--you need it to open an application so you don't miss it the reminder.

You can do this with a Meeting Request.

1. Create the meeting request with yourself as the attendee.
2. Choose online meeting using Windows Media Services, check Automatically start Windows Media with Reminder.
3. Add a file path to open templates or documents, Web URLs to open your browser.
4. Send it.

When the appointed time for the reminder arrives, the file opens if you use "always open this file" or pops up the downloaded file Open/Save dialog.