Xp re-installation?

I'll try to keep it as simple as possible here. a while ago i got a laptop which had windows xp home pre-installed. a short time after, we bought xp home for our desktop pc. the problem i now have is that i'd like to clear out my laptop and start from scratch - after loads of software installation & removal it is getting a little slow. since my laptop came with xp installed already, there wasn't a cd to use. however, i have got the cd we used to install it on our desktop. can i therefore use the same cd with the product key on the bottom of my laptop or would the cd be only assigned to the key that it came with? dont suggest getting a new comp or upgrading to vista because that's beyond my means at the moment!

Answer

Hi yes you can use the cd you have and use the product key from your laptop. however there is usually no problem with using the product key that came with the cd, xp can be installed on 2 machines with no problems. the product key is unique, the cd isn't .