Upgrade from Office 2000 Small Business to Office 2000 Professional

[David]

Hi,

I am trying to upgrade from Office 2000 Small Business to
Office 2000 Professional and the upgrade disks says I do
not have a qualifying product installed?

Is this true that Office 2000 Small Business does not
qualify?

I had previously installed the Office 2000 Professional
Upgrade on this very same computer but I was hit with
Spyware and had to reinstall with the original Office 2000
Small Business disk.

I did not install the Media disk - could that make a
difference?

Thanks,

David