Here are more updates that are missing from your list.
And one more thing, the KB2626416 update is not required in standard Windows XP, so you may remove it. (It's for Active Directory which has to be installed separately.)
Security Updates:
KB923561 MS09-010 Update for Windows WordPad Converter
http://download.micr...561-x64-ENU.exe
KB924667 MS07-012 Vulnerability in Microsoft Foundation Classes could allow for remote code execution
KB924667 is replaced by KB2387149 (MS10-074) + KB2506212 (MS11-024)
KB946026 MS08-007 Vulnerability in WebDAV Mini-Redirector could allow remote code execution
http://download.micr...026-x64-ENU.exe
KB950762 MS08-036 Vulnerabilities in Pragmatic General Multicast (PGM) could allow denial of service (Rmcast.sys)
http://download.micr...762-x64-ENU.exe
KB950974 MS08-049 Vulnerability in Event System could allow remote code execution (Es.dll)
http://download.micr...974-x64-ENU.exe
KB952004 MS09-012 Security update for MSDTC Transaction Facility
http://download.micr...004-x64-ENU.exe
KB956802 MS08-071 Vulnerabilities in GDI could allow remote code execution (Gdi32.dll)
http://download.micr...802-x64-ENU.exe
KB958644 MS08-067 Vulnerability in Server service could allow remote code execution (Netapi32.dll)
http://download.micr...644-x64-ENU.exe
KB959426 MS09-015 Blended threat vulnerability in SearchPath could allow elevation of privilege
http://download.micr...426-x64-ENU.exe
KB960803 MS09-013 Vulnerabilities in Windows HTTP services could allow remote code execution
KB960803 is replaced by KB2638806 (MS12-006)
KB961501 MS09-022 Vulnerabilities in the Windows Print Spooler could allow remote code execution (Localspl.dll)
http://download.micr...501-x64-ENU.exe
KB2124261 MS10-065 Security update for Internet Information Services ASP (asp.dll)
http://download.micr...261-x64-ENU.exe
KB2347290 MS10-061 Vulnerability in Print Spooler Service Could Allow Remote Code Execution (Spoolsv.exe)
http://download.micr...290-x64-ENU.exe
KB2479943 MS11-015 Vulnerabilities in Windows Media Could Allow Remote Code Execution (sbe.dll)
http://download.micr...943-x64-ENU.exe
Important (non-security) updates:
KB927891: You receive an access violation error and the system may appear to become unresponsive when you try to install an update from Windows Update or from Microsoft Update
http://download.micr...-v5-x64-ENU.exe
KB936357: A microcode reliability update is available that improves the reliability of systems that use Intel processors
http://download.micr...357-x64-ENU.exe
KB968389: Extended Protection for Authentication
http://download.micr...389-x64-ENU.exe
Notes:
1. The optional update KB971737 replaces KB960803.
2. If you have the optional update KB2492386 installed, then KB923561 can be replaced by KB2492386+KB979687+KB2485663.
This post has been edited by Explorer09: 13 May 2012 - 08:17 AM