Project Server 2007, MOSS 2007 & Workflow

Few days back i was analyzing the effect of workflow in Project server 2007.  As Project server is also build on WSS 3.0 Foundation workflow is now part of the solution.  The point to think here that how we can use the workflow that is available and how can we create new workflows.  Brian Smith has a great post here where he has provide a detailed view of all three technologies and how we can use these three togather.