It seems like if you compile a Visual Studio solution and have a version # in your AssemblyInfo.cs file, that should propagate to say, the Windows Explorer properties dialog. This way, someone could simply right click on the *.exe and click 'properties' to see the version #. Is there a special setting in Visual Studio to make this happen?
example picture http://content.screencast.com/users/Pincas/folders/Jing/media/40442efd-6d74-4d8a-8e77-c1e725e6c150/2008-09-24_0849.png
Edit: I should have mentioned that this is, specifically, for .NET Compact Framework 2.0, which doesn't support AssemblyFileVersion. Is all hope lost?
Note, that the AssemblyFileVersion attribute is not available under .NET Compact Framework!
See this article from Daniel Mooth for a workaround.