"Checking for the latest version of the Windows Update software"
When you?re using the Windows Update Web site you receive a dialog box that states:
"Checking for the latest version of the Windows Update software...
Depending on your connection speed, this might take a minute. To
ensure that you're able to view Windows Update when this verification
is complete, select Yes in any "Security Warning" dialog boxes that
appear." The update process freezes at this point.
This may be caused by a third-party firewall product called Zone Alarm. Try disabling this program and opening the Windows Update site again. Be sure to enable your firewall again when you are done.