http://developers.de/blogs/damir_dobric/archive/2006/11/28/Referencing-custom-libraries-from-Visual-Studio.aspxSometimes you will want to reference some libraries within Visual Studio, which by default does not appear in VS reference dialog. For example, you open the Add Reference dialog in VS and want that assemblies from some specific path appear in the “enCommunityServer 2008 SP1 (Build: 30619.63)