Moreover, as both Office 20 are now EoS, the latest IE8 update and a reboot may be enough for both MU and WU.
If using Windows Update (WU) instead, then the latest IE8 update and a reboot should be enough. After that, MU will find all remaining relevant updates fast. When MU takes ages to find anything, stop it, install by hand the Office 2007 Comparability Pack and all Office 2003 updates (they usually don't require rebooting), then the latest IE8 update, then reboot. NOW, sometimes Microsoft Update (MU) takes a long time to get anywhere - sometimes a LONG LONG time. And POSReady2009 Updates will install on XP + Windows Update shows the updates for POSReady 2009
