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I have Visual Basic 2008 Express and Visual C# 2008 Express editions of Visual Studio installed. I have downloaded the source code (VB and C#) for the Link In Action book but I cannot open the projects.

When I attempt to open one of the VB projects for example, I get the following error message:

One or more of the projects in the solution could not be loaded for the following reasons:
The project file or web has been moved, renamed or is not on you computer.
These projects will be labeled as unavailable in Solution Explorer. Expand the project node to show the reason the project could not be loaded.

The Solution Explorer shows a number of projects (HelloLinq, etc.). All of them indicate "The project file or web cannot be found".

What am I doing wrong?