It depends on what yours is, it needs to be an actual Microsoft OEM CD of
the same version (Home or Pro) that is provided on the product key sticker
on the Dell.

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Crosspost, do not multipost http://www.blakjak.demon.co.uk/mul_crss.htm
How to ask a question http://support.microsoft.com/kb/555375
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"peewee" <peewee@discussions.microsoft.com> wrote in message
news:AC840737-8B31-4AB2-AF1C-6BAE5AC16D31@microsoft.com...
> My sisters computer is running very slow so I tried the systems restore
> and
> that did not work, so I am thinking of reinstalling XP, the problem is she
> does not have the reinstallation cd. I have mine but is about three years
> older, will I be able to use mine, or should she try to get one from Dell?