Downgrade office 2007 professional

I buied office 2007 professional but for some user problem i should downgrade
to 2003 version.

Is possibile to do this?
What serial numer could i use for activate/patching/register in case of 2003
installation?
I have other cd of office 2003 but all this is already installed over pc.
What could i do?

Thanks

Answers are in line

>I buied office 2007 professional but for some user problem i should downgrade
> to 2003 version.
>
> Is possibile to do this?

Yes

> What serial numer could i use for activate/patching/register in case of 2003
> installation?

The same one that you used when you installed Office 2003

> I have other cd of office 2003 but all this is already installed over pc.
> What could i do?

You need to use the same Office 2003 CD as with the original installation

"fabry" <fabry@discussions.microsoft.com> wrote in message news:288A2223-10DD-4FBF-AE0D-


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Peter

Please Reply to Newsgroup for the benefit of others
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As long as you already have the media, follow instructions here,

How to obtain a new product key for Office program setup
http://support.microsoft.com/default...b;en-us;823570

http://download.microsoft.com/downlo...rade_chart.doc

fabry wrote:

> I buied office 2007 professional but for some user problem i should downgrade
> to 2003 version.
>
> Is possibile to do this?
> What serial numer could i use for activate/patching/register in case of 2003
> installation?
> I have other cd of office 2003 but all this is already installed over pc.
> What could i do?
>
> Thanks