The idea that an operating system would allow a program -- a virus,
worm, or any other program -- to be installed on a computer without
asking the administrator's permission is so outrageous that it boggles
my mind!

Don't be too sure about Linux and other OS'es. The hackers are zeroing in on
those also. Be sure to visit the Microsoft Update site frequently and apply
the important patches.
Clear, Dark, Steady Skies!
(And considerate neighbors!!!)