How do I copy or clone an xp pro installation?

I have a fresh install complete with updates and a few basic programs, what is the simplest way to make a bootable clone/copy of this to load complete onto other [larger] sized hdd’s?

I have two pc’s and two external hdd’s, but not a pc with 2 internal hdd’s.

I have Windows Vista preloaded on my computer, then I set up a dual boot between Vista and Windows XP Professional. Now I have Windows XP Gamer Edition and I want to install that too, but I read somewhere that it is “unadvised.”

If I install it then add it to my EasyBCD Vista Bootloader will something bad happen? If so then what, and what can I do to avoid it?

Thanks in advance.

I want to install Microsoft Office onto my Windows XP. My computer did not come with Office but I believe my Windows XP disc from college has Office on it. I do I only install Office and not all of Windows XP?

Before I had windows 7 home premium so I upgraded it to ultimate and a few days later it said that the windows 7 I had wasn’t genuine. And I still have the product key for windows 7 home premium. What should I do? Help! Also the product key that I used for windows 7 ultimate, I got it off the internet.