Try this and post back with result.
This has worked for many.
1st Rename Office subkeys
Note: Removing the following registry keys may reset customized user
settings for your Microsoft Office programs.
1. Close all the applications.
2. Click on Start->Run, type in REGEDIT and click on OK.
3. Locate and select the following registry subkeys:
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\11.0
4. Right click on 11.0 and rename them to Old11.
5. Close the Registry Editor.
2nd. Detect and Repair Office 2003
1. On the Windows taskbar, click Start, point to and click Control Panel.
2. Double-click Add/Remove Programs.
3. Click Change/Remove Programs on the left pane.
4. Highlight Microsoft Office Professional Edition 2003 on the right pane
and click Change.
5. Insert the correct version of CD when it requires.
6. Select "Reinstall and Repair" and click Next.
7. Select "Detect and Repair errors in my Office installation".
8. Click Install and wait the process to end.
3rd. Install the Update
--
Peter
Please Reply to Newsgroup for the benefit of others
Requests for assistance by email can not and will not be acknowledged.
"Hotcoffee" <> wrote in message news

85C0465-97E0-457A-B140-...
> for some weeks now I've been trying to upgrade the following 3:
> -Security Update for Excel 2003 (KB925257)
> -Update for Outlook 2003 Junk Email Filter (KB925534)
> -Security Update for Outlook 2003 (KB924085
> But they fail to install each time I try.
>
> I run XP SP2 and installed all the automatic updates withouit any problem
> until now.
>
> Does anyone know the answer?