I installed it with no big problem until I had to input the long license number string.
MS wouldn't take it so I called them and thet took care of it right away.
Last night I did a clean install for the same pc but with a new hard drive, using the same MS cd and the same license that came with the cd.
Again MS would not take the license and this time it would not let me get past the license field.
Out of desperation I erased the whole license string and hit enter and MS let me finish the install.
I have not received any warning nor any pop ups about the license or activating the OS.
The question is simple.