A trial version is installed.
I've already tried to repair windows. No problem was found.
I tried installing as adminstrator as well.
Perhaps it is that pesky trial version that is the problem.

"mezzodiva" wrote:

> Do you have any previous versions of Office installed, or was Office 2007
> Trial or something else previously installed? I'm just wondering if there's
> something hanging on from a previous installation.
>
> My initial thought was a problem in your Vista installation or
> configuration, since you can install the DVD on another system...Any chance
> you could try to repair your Windows installation?
>
> Do you have administrative rights on the system? Have you tried installing
> as administrator?
>
> --
> mezzodiva
>
> Please reply to the newsgroup so all may benefit.
>
>
> "JuST Jen" <JuST Jen@discussions.microsoft.com> wrote in message
> news:D1AD4B16-B171-4FE9-83EE-EBA921E2AC8C@microsoft.com...
> > When installing Office Ultimate 2007 on my Windows Vista Ultimate system,
> > I
> > get the following setup error message very soon after Setup is launched
> > (and
> > prior to asking for entry of the key):
> >
> > "Setup cannot continue because a required file is either corrupted or not
> > available. run Setup again from original source disc or download
> > location."
> >
> > I have already tried copying the CD to a system folder and running Setup
> > from that location. I have also tried running Setup in Windows XP
> > compatibility mode without success. My system has all updates installed
> > for
> > Windows Vista Ultimate. I am able to install other programs on this
> > system
> > from the same DVD/CD drive. And, Setup will launch from the CD on another
> > system, and gets to the screen that asks for the key entry, so I do not
> > believe the CD itself is bad.
> >
> > Any ideas?
>
>
>