Working on it at the moment.

Windows Malicious Software Removal Tool Jan 2014 KB890830 downloaded and ran without issue
Security Update for XP & Server KB2917500 seemed to extract OK
Security update for XP KB2914368 re-installed and then uninstalled
Security Update for Word 2003 KB2863866 Error Message- cannot be applied
Security update for Office 2007 KB2837615 Error Message - Failed

Will need to re-boot to complete the uninstallation, but that will have to wait until after a very late tea ;D