In Visual Studio 2010 and possibly in future versions you can add the manifest file to your project.
Right click on your project file on the Solution Explorer, select AddNew itemApplication Manifest File
The file name is app.manifest. 
If this item doesn't exist then your project type is not conform with a manifest file, e.g. web application.
A manifest file in computing is a file containing metadata for a group of accompanying files that are part of a set or coherent unit. For example, the files of a computer program may have a manifest describing the name, version number 4.2, license and the constituent files of the program.[1]
Wikipedia