Sharepoint designer workflow - it seems so easy, there is no code, it all point and click and yet and yet - it never goes as easily as your reckon its going to - mircrosoft have this really nice workflow tutorial http://office.microsoft.com/en-us/sharepointdesigner/HA102564171033.aspx
Here is a whole series of stuff DWP and workflow related http://masteringsharepoint.com/blogs/beagle/archive/2009/02/05/DVWP4.aspx
