I have an old, very old, HP laptop which runs Windows XP. It came installed with the PC (means that it is an OEM build, if I got it right). I'd like to replace its HDD for a better one, but I want to keep Windows XP. Yes, I am totally aware of the security issues.
I've read that one can download the Windows image from the Microsoft website, but that's only for Windows 7 beyond, since there are no images of Windows XP there. How can I proceed?
Edit: I do not have any Windows installation CD.