More on this fascinating (?) issue
OK, I've read all this and I THINK I understand. HOWEVER ... there is still a difference between a user (who has administrator privileges - like me who is the ONLY user) and the actual (normally hidden) Administrator account. Even if I right-click on my desktop Regedit icon and click 'Run as Administrator' I do NOT get the same privileges as if I were to logoff and logon as the (normally hidden) Administrator.
For example, in Blink's wonderful tutorials about "cleaning up" the Navigation pane, he references a Key called HKLM\SOFTWARE\Wow6432Node. When you run Regedit "as Administrator", you do NOT see that Key. When you actually logon as the Administrator, you do see the 'Wow6432Node' Key. Now Blink does instruct you to logon as Administrator, but I was going to cheat and discovered this anomaly.
Now for my 2 problems:
(1) Somehow in messing around on my desktop, I have managed to UNHIDE the Administrator user account and it causes me to have to click on my name whenever I boot my PC. I.e., it stops and displays TWO user icons forcing me to select mine. I am the only real user, my location is secure and I do not use passwords, so all my systems have always booted straight to 'ready to use.' How do I rehide the Administrator?
(2) Ironically enough, my other related problem is my Win7 laptop which I use only when traveling. I have never accidentally unhidden the Administrator and I need to find out how I logon as Administrator in order to follow Blinks NavPane cleanups. Ugh.
NO NEED TO REPLY -- I found the answer on this fantastic web site immediately after I wrote the above. It's at:
http://www.sevenforums.com/tutorials/507-built-administrator-account-enable-disable.html