I bought a hard-disk to replace the faulty one in my Pentium 4 rig, which has OEM XP Home. Now the last time I did a clean XP install I had to call MS and they gave me automated numbers to input to re-activate. Just in case, that this time I have to speak to a human, will they be accepting to re-activate if I tell them (the truth) that I have changed the hard disk? Or would you suggest something else? Thank you.