In Office XP the web components MSI file is called OWC10. If you have more than one Office update to install (more than one MSP file), you have to install them separately. Download the Office update you want to install from one of the sites listed above.
Make sure you download the Administrative Installation update.
On a client PC, update the Office installation by clicking Start, Run and typing: [start] msiexec /i [path to updated file on the administrative image] REINSTALL=All REINSTALLMODE=vomus /qb ex.: In the above example, the location of the now updated MSI file on the server share where Office is installed is \server01\installs\office\PROPLUS.
In the past this was not supported, but because of synchronization issues some organizations were having with Office updates, MS now supports this.
updates to an Office Administrative Installation Point, you can go to the Office Download Center and download the updates that are identified as Administrative Installation updates.
For Security Updates on either a stand alone computer or an Administrative Installation Point, you can go to the MS Technet Security Bulletin Search site and search for any updates.
You can use a UNC path or drive letter and path for the location of the MSI file.
If any of your paths contain a space character, the path must be surrounded by quotation marks (for example, "C:\Office XP Admin").