This registry file adds the following entries to the Windows Explorer’s context menus, that will help you speed your development and test cycle:
1) .idl files : Build : run midl.exe against the idl file top produce a type library from it.
2) .dll files: register/unregister COM dll using regsvr32, register .NET assembly in the GAC, register .NET assembly for COM Interop (regasm.exe), register .NET assembly for COM Interop using the codebase switch (regasm.exe /codebase), register/unregister COM EXE.
3) .tlb files : use regtlib to register a type library.
4) Any directory: Open a DOS console and sets required PATH and INCLUDE environment variables (runs vsvar32.bat).