Setting up recurring email

I’m trying to setup a recurring email in Outlook xp. I’ve currently using a script in a custom task form, and then running a recurring task using the custom form. This works when the task is marked complete. However is there a way to do this without the user having to mark the task complete. For instance is there a command line I can use to run the task, and then set up a scheduled task to run the command line everytime the email needs to be sent out.

Need suggestions.

Thanks
Mark