Windows and key codes

Hi, i jsut wanted to ask some questions about Windows and the key.

Now when i install the windows xp from a cd, you have to put in a cd key, does this have any corralation to the windows key you must input after instalation?

Or can i use any windows cd to install and then put in new key codes.

And lastly is it possible to use the same windows key from a laptop or mates PC on a new home built PC?

Thanks

hmmm, are you referring to the activation wizard or something after you finish installation?

If the copy of Windows XP came with the laptop (OEM copy of Windows), then it cannot be removed from the laptop and installed on the desktop. (Well, at least according to MS's license agreement). If you purchased the Windows XP after you bought the laptop and it is a retail copy, then you are allowed to uninstall it from the laptop and install it on the desktop.

If it is an OEM copy, it may not install on the desktop anyway. Many OEM manufacturers (Dell, HP, etc) check the motherboard's BIOS to ensure that it's being installed on the particular type of machine it was made for... it won't install on a computer from a different manufacturer.

not allowed first of all, since hes the soul owner of that copy and its license

you can install it, but upon activation it may need you to call MS to verify owernship info...i guess you could scam it if your buddy calls and get you a new activation code...risky and messy tho

if hes never going to use that cd again, its still the same process since ms doesnt allow you re-sell their product

is it possible to use somebody elses CD and buy a activation code from sokmewhere instead of buyin the fulll retail copy.

Well, you need to use the type of CD that your key code is for--OEM, upgrade or full retail.