NHL 2001 CD key HELP !!!

[Peterke]

I tried to install NHL 2001 onto my machine, as described on this site.
But !! I always get a window that asks me to type in a code whenever I want to install the game. Of course, I don't have such a code. Other friends do NOT get this window to enter a code before the game can be installed (even from my CD).
Can anybody help me out ? How can this be solved ? Now I cannot install and play the game.