SharePoint WorkFlow Link Dump

Workflow and ASPX forms
http://blogs.msdn.com/sharepoint/archive/2006/12/19/what-about-workflow-and-aspx-forms.aspx

SharePoint 2007 Workflows - understanding what you can do with the various workflow types available in SharePoint
http://blogs.interknowlogy.com/rodneyguzman/archive/2007/03/20/12405.aspx