Here is another possibility

The Office 2003 Web Components feature installed with Office 2007 Beta2
causes the Office 2007 product to block its installation.
Users should use Add Remove Programs in the Windows Control Panel to Remove
the Office 2003 Web Components, and then install the final Office 2007
product.

and it can also be Expression Web beta that needs uninstalling.

--
__________________________________
HTH

Bob

"trip_to_tokyo" wrote in message
...

1. I have purchased Office Excel 2007 Upgrade version.

2. I have Excel 2002 (10.6854.6845) SP3.

3. When I insert new disc I get warning:-

"Setup is unable to proceed due to the following error(s):

The 2007 Microsoft Office system does not support upgrading from a
prerelease version of the 2007 Microsoft Office system. You must first
uninstall any prerelease versions of the 2007 Microsoft Office system
products and associated technologies.
Correct the issue(s) listed above and re-run setup."

4. The problem is I do not have any, "prerelease version of the 2007
Microsoft Office system" installed on my computer.

Any ideas how I get round this problem please?

Thanks for any help,

Steve