Hey Microsoft, will you please stick with the business that you are good at?
Too late, they just shut that one down: http://www.gamasutra.com/php-bin/news_index.php?story=21981 Microsoft Flight Simulator is dead
As the old story goes...a professor was lecturing that the Sun was 10,000,000 degrees. A student asked "Is that Celsius or Kelvin?" and he replied "What does it matter?"
Celsius vs Kelvin doesn't matter when talking about 10,000,000 degrees, as they only differ in the zero point by a few hundred degrees, which is not significant on that range. 10,000,000 degrees Fahrenheit on the other hand is only about 5.5 million degrees Celsius which *is* a significant difference (almost 50%).
The biggest mistake you can make is to believe that you are working for someone else.
