yeah, you're right, I think I'm a little obsessed about that :))
As I said, I didn't hear any obvious cracks after changing that MSISUPPORT value from regeditor at the fourth post.
one more question, Is there any difference between changing the msisupport value from cmd with changing it from regeditor ? cause in my regeditor the value is still 1 but in cmd when I type that command you told the value is 0. do these two strings are different?