To get the version to appear for a .NET DLL, I tried adding this to the indexing clause of the project's root class:

	assembly_metadata:
		create {ASSEMBLY_FILE_VERSION_ATTRIBUTE}.make ("1.4.1.444") end

According to Reflector, the attribute is in there:

	[assembly: AssemblyFileVersion("1.4.1.444")]

But I still don't get a Version tab in Windows Explorer.