AutoCAD 2013 :: How To Permanently Set NAVCUBEDISPLAY And NAVBARDISPLAY To Zero

How can I turn off the NAVCUBE and NAVBAR features permanently?  If I set either NAVCUBEDISPLAY or NAVBARDISPLAY to 0 (zero) in a session, both items (annoyingly) reappear the next time I launch AutoCAD.Per another post on the AutoCAD 2012 forum, I've tried setting these variables in the registry here:

HKEY_CURRENT_USERSoftwareAutodeskAutoCADR19.0ACAD-B005:409 Profiles<<VANILLA>>Variables. URL....

instructs the reader to use a string value (REG_SZ) and set the value to "O" (presumably for "Off"; but that would conflict with "On").  I tried it with both "O" and "OFF".

So I've tried that approach; but it's not working: these UI-cluttering features (that I don't want to see) reappear upon launch.  I've also tried setting these as 32-bit and 64-bit values (to zero).  But that hasn't worked either.

So we just upgraded from 2007 (it's a long and unrelated story why it's taken us so long to upgrade).  The other thing I've noticed is that when I drag the command-line box and dock it at the bottom (I want it permanently docked at the bottom), upon the next launch of AutoCAD, it appears again in the hovering undocked position.  It's very annoying that AutoCAD doesn't automatically remember and respect the user's preferences.  And since I'm ranting, my other impression with AutoCAD 2013 is just how incredibly slow it is.  I've got respectable hardware (5.9 Windows experience index), yet AutoCAD 2013 launches like a dog.