Kel,
You can include WF schedules using the Server Event (WF) event. Although this has some interesting possibilities, I haven't seen anyone use it as the blackpearl toolbox is pretty rich. There are a number of ways you can add custom functions depending on what you want to do.
I'm not sure exacly what you mean by scheduling, but yes, you can schedule workflows to run on a periodic basis. Right now this functionality is only available through the scheduling API, but UI support is coming in the future. If you are talking about scheduling activites within a workflow, that can usually be accomplished with a combination of rules on activities.
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