Loops in SharePoint Designer workflows have long been consider either impossible or extremely difficult. There are no built-in actions or activity that supports looping.
In order to create workflow loops in SharePoint Designer, you need to utilize techniques such as secondary workflows or control workflows.
In the bonus video content of issue 4 of Understanding SharePoint Journal, titled SharePoint Designer workflows, you will learn and see demonstrated how to create secondary workflows to create loops in SharePoint Designer 2007 workflows.
You can read the entire SharePoint Designer workflow issue, including almost three hours of video tutorials and demonstrations for just $14.95.
