Hello Jack_606,
You can just use it again, if it gives an error you can phone MS and they
will help you with the activation.
Best regards
Meinolf Weber
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> Hi guys,
>
> just a quick question. Since installing vista, a lot of my old
> programs (particularly games) will not run properly, even under
> compatability mode.
>
> My question is, if I install XP as a clean installation over my copy
> of Vista (effectively deleteing it) so that I can use some of my older
> programs, will I be able, at a later date, to reintall Vista using the
> same product key I used to install it the first time, or will it have
> been taken of the database now that it has already been activated.
>
> As I will be doing this on the same computer, is there someway Vista
> will recognised this and allow me to do it, or, is I choose to
> reinstall XP, will my new copy of Vista become useless, and if I want
> to change back, I will have to buy another new copy.
>
> Thanks for your help,
>
> Jack Lambourn.
>