Thanks to a previous post by Riddlez, the link http://forums.mcafeehelp.com/showthread.php?t=229135 seems to have resolved one issue. My Real-Time Scanning is now ON and the Virus and Spyware Protection is ACTIVE. Now the next hurdle: I'm still getting the message: An Error Has Occurred. An unexpected problem occurred during your scan. Please click OK to go back to the Home page, and then try running your scan again.
Windows 7, 2 yrs old, no other security programs to uninstall...