You can take a look at the Guadagno Task Scheduler, an article here on CodeProject. http://www.codeproject.com/useritems/Guadagno_Task_Scheduler.asp. This application is a pluggable Task Scheduler that lets you write your own task to schedule. It comes with a RunCommand plug-in that provides the scheduling for Command Line files.
Here are some of my articles. Hope this helps! Joseph Guadagno http://www.josephguadagno.net