http://www.microsoft.com/downloads/en/details.aspx?FamilyID=22914587-b4ad-4eae-87cf-b14ae6a939b0&displaylang=en
ILMerge is a utility for merging multiple .NET assemblies into a single .NET assembly. It works on executables and dlls alike. It comes with several options for controlling the processing and format of the output, see the accompanying documentation for details.
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