HMM! I have been advised that this little Carlson utility is indeed an OK addition to your Design software . . .
That is just fine, but I installed it on my Civil 3D 2007 at work and suddenly C3D takes 5 minutes to load, do anything or unload.
HARRUMPH!
I uninstalled it and the problem persists with Civil 3D soaking up all but about 200mb of my 2gb memory after an empty drawing1.dwg has finally loaded. A repair produced no better results so guess who gets a fresh install.
PROCEED WITH CAUTION