I have rang the number after a new network adapter and more memory. It is automated.
All you do is phone the number, while the activation code is on the screen, enter it into the keypad and they read out a code that you enter.
It is quick and quite good, so no going to jail for you.
No need to worry, they are only out to catch people who are putting it on several systems and know what they are doing.
You did not mean to do that.
I have managed to get XP on 4 systems without Microsoft noticing. I only did this for test purposes all copies have been installed onky on ONE system, but I tried installing it on multiple just to test it.
I've rung that number when I upgraded my hard drive. You say what you've done and read out the numbers on your screen, the operator gives you another load of numbers to unlock the OS and away you go - not to jail.
This is all blown out of proportion, I've never had anything but help from Microsoft when I've phoned up and I've done it 3 times now.