We've released the first version of the Stream Driver Wizard on Codeplex. Sam Phung and Thierry Joubert are assisting with its development.
Project Link: http://cedriverwiz.codeplex.com/
The wizard is plugged into the Tools menu in Visual Studio 2005 and can generate a Windows CE 6 Subproject for a custom (name) CE stream driver.
The wizard will be progressively updated with some options to generate some other subprojects that load and test the driver. Sam has written a How-To include the driver within an exist Windows CE 6 project build.