You receive an "Installation Error: File not Found" or "Error 0x51F" error message
when you try to update Office 2003 programs from the Office Update Web site or the
Office Download Center
http://support.microsoft.com/kb/875556/en-us

You may receive error 0x51F when you try to install an Office Updates. Applicable
Office versions: Office 2003
http://update.microsoft.com/windowsu...=en&IsMu=False

Error code 0x51F – Apparently this occurs when Office Setup cannot locate the
installation source because it’s either corrupted or deleted.
Downloading the full update for Office 2003 may fix this problem.
http://www.microsoft.com/downloads/d...displaylang=en
Office2003SP2-KB887616-FullFile-ENU.exe

or

Some have reported that placing the Office 2003 CD in the drive before trying to
install the update also fixes the problem.

Otherwise try repairing your installation of Office 2003

Method 1 – Open Word, go to Help – Select Detect and Repair

or use Method 2 -

1. Click Start, and then click Control Panel.
2. Click Add or Remove Programs.
3. Click the Office 2003 program that you want to repair, and then click Change.
4. In the Maintenance Mode Options dialog box, click Reinstall or Repair, and then
click Next.
5. In the Reinstall or Repair Office dialog box, click Detect and Repair errors in my
Office installation, and then click Install.
6. When the repair process is finished, run the update again.

Most likely you will need to have your Office 2003 CD handy.

or

http://www.microsoft.com/downloads/d...displaylang=en
Office 2003 Tool: Local Installation Source Tool
Quick Description - The Local Installation Source Tool is a wizard to help manage
your Local Installation Source (LIS) on computers running Microsoft Office 2003.
Extract these files - LisTool.exe and LisTool.chm to a new folder of your choice and
double click the LISTOOL.exe.
Choose the Disable LIS option and click next. Select all the check boxes in the
subsequent dialog.
Then proceed to Finish.


http://www.microsoft.com/athome/secu...e/default.mspx
Fight Spyware – articles by Microsoft

"Gerryevo" <Gerryevo@discussions.microsoft.com> wrote in message
news:809699DF-CDD1-43FD-8444-3DAD3CE1DF5C@microsoft.com...
> Hi i am trying to install two updates. One is for office 2003 KB907417 the
> other one is for outlook 2003 junk e-mail filter Kb907492. When itry to
> install these it comes up with error code 0x51F for the both of them,am not
> having much luck. (Am Newbe).I also have another problem to do with viewpoint
> corporation,i think it is adware rubbish but i cannot get rid of it.I have
> tried to delete it in the Registry as well. Any help appreciated.
> (Kremmen).
>
> Gerry