With .NET Reflector Pro, you'll get the latest version of .NET Reflector, plus a Visual Studio add-in containing the Pro features.

.NET Reflector Pro integrates .NET Reflector into Visual Studio to allow you to seamlessly debug into third-party code and assemblies, even if you don't have the source code for them.

For example, you may have a project that contains a third-party assembly, but you cannot step into it because you do not have the source code or PDB file.

After you have installed .NET Reflector Pro, you can use the Visual Studio add-in to select and decompile the assembly that you are interested in.

You can then return to your source code in Visual Studio and treat the decompiled assembly much like your own code; you can step through the assemblies and use all the debugging techniques that you would use on your own code, including setting breakpoints.