VS.NET 2003 Error: The project you are trying to open is a Web project. You need to open it by specifying its URL path.

- Create a new webinfo file, for example for the project file: proj.vbproj:
"proj.vbproj.webinfo":
<VisualStudioUNCWeb>
    <Web URLPath = "http://localhost/CAMS/Workflow/proj.vbproj" />
</VisualStudioUNCWeb>

 - Open the solution and "Add Existing project"