You will need any one of the following as qualifying product:

1) Microsoft Works 6.0-10; For latest version you also need a patch to be
recognised in Office 2007
http://www.microsoft.com/downloads/details.aspx?FamilyId=04446BAB-F439-4DB8-856B-2DE7234F22A0&displaylang=en)
2) Microsoft Works suite 2000-2006 or later;
3) any 2000-2007 Microsoft Office program or suite;
4) any Microsoft Office XP suite BUT NOT Office XP Student and Teacher.

These can be either in a CD form or already installed on your system. I am
sure, you can but MS Works used versions from Amazon. See this link:

http://www.amazon.com/gp/offer-listi...condition=used

If your machine came with Works 9 or 10 then you should be able to install
the upgrade version subject to the patch I have listed above.

hth


"outlooking in los angeles"
m wrote in message
...
Hello,

My old computer, running WinXP died. I have a new pc running Windows 7. My
problem is that I originally had Office 2003 installed on my old pc and
upgraded to Office 2007. I can no longer find the original Office 2003 CD.
I
need to install 2007 on my new machine. I had registered 2007 with
Microsoft
on my old machine but I understand that you can't install an upgrade
edition
without having a full copy of the software you're upgrading from already
installed. Since I can't find the original Office 2003 CD, I need to know
how
I can install the Office 2007 upgrade edition without having to
re-purchase a
full copy. Thanks for your help.