Our own Steve Rachui posted some great info on creating Rules and Monitors with a schedule. If you haven't seen it already I have a brief intro and a link below:
Although there are other posts that address this topic none of them go in depth to explain the various elements that are part of a rule and monitor to create a schedule and none I’ve seen attempt to relate the authoring console back to the underlying XML. A full understanding of how this works requires understanding both the authoring console components and the XML generated by the authoring console. The goal of this post then will be to present the graphical means of creating a schedule while pulling in the XML to show how everything links together.
To continue reading see http://blogs.msdn.com/steverac/archive/2009/11/17/creating-rules-and-monitors-with-a-schedule-understanding-xml-internals.aspx
J.C. Hornbeck | System Center Knowledge Engineer