You do not have to do anything manually.
Just make sure your 2013 support directory is included in the support file search path (Options>Files Tab)
For Civil3D, this path is:
C:\Program Files\Autodesk\AutoCAD Civil 3D 2013\Support\en-us
It should be the same for AutoCAD, except replace AutoCAD Civil 3D 2013 with AutoCAD 2013.
Just browse there and look for that file.
Lastly, did you use the "Migration Tools" when you performed your install?
Load/Unload Applications - APPLOAD
In the Startup Suite - Contents - Add... and search for the lsp files (mvsetup.lsp and acad2013doc.lsp).
Look in C:\Program Files\Autodesk\AutoCAD Map 3D 2013\Support\en-us
I'm not saying that everyone is required to load them into the Startup Suite...I'm am saying that mine did not work until I did it...
The first thing I tried was to add the search directory, but I keep getting errs that the lisps couldn't be found, so I loaded them myself. It's working now, and I didn't have to put in a request with IT to wait a month to have them reinstall it (if that would have even helped?).
cedwards, that wasn't so nice. MOPPETS?
Thanks RK, that does work. Doesn't change the fact that it should be totally unneccessary in a clean install and is just another thing in Autocad broken by an update that will probably never be fixed.
SteveFaken, you must only be working in vanilla autocad. Those who work in real coordinate systems would cringe at you making that statement. You can't just ROTATE a drawing without destroying the coordinate system of a drawing. That's why we use DVIEW and MVSETUP to visually rotate a drawing in order to place it on a sheet.
You dont need MV SetUp as you can rotate your viewport by using the rotate commaned.