Jean Parrot -> Charles Scaglione said..

 CS>> ..XP is no longer supported using Boot Camp.  Only Vista
 JP> and Win 7.

 JP> That is fine, you will never see the opposite, a PC running a
 JP> Wormy programme.

That is not technically correct.  OS X is based on BSD unix.  BSD or any of
its derivatives are already being used on many pcs. The more correct way to
say it would be "Apple/Mac-branded" software wouldn't be found
running on a pc.

But to dispel even that.. check this out..  it will make the hair on your back curl:

http://www.emulators.com/softmac.htm

"Our solution, since we developed it in 1997, is to turn a PC into a
Macintosh clone, and to run Mac OS and Macintosh applications directly on
the PC. You benefit from the lower cost and faster speed of the PC, and
still keep the use of your legacy Macintosh applications."

--- Thunderbird 2.0.0.24 (Windows/20100228)