Kind of obvious as you can't compile something you haven't, check getting-sources for more info.

You can find Visual Studio 2010 here. You can find a free version of Visual C++ 2010 here.

TODO

If you are using the precompiled libraries you can skip this part.

TODO

TODO

Open the solution file in editor\builds\vs2010 , select the "Release" configuration and the target architecture (Win32 or x86) from the configuration manager pulldown menu (use Win32 if you are unsure). Then go to Build→Build solution, or just press Control-F7 to compile it.

The Editor executable should be in the folder bin\Editor.exe. If you are not using the precompiled libraries, and you have dynamically linked Editor, you will need to place the required .dll in the same folder Editor.exe is.