Hello Dan - OHSD,
Even though the updates you are having difficulty with are WGA and OGA related, they are still Windows Updates and the downloading and installing of such is supported thru normal WU support means, such as:
http://social.answers.microsoft.com/Forums/en-US/vistawu/threads?filter=alltypes
and
http://support.microsoft.com/ph/6527#tab0
Good Luck! :-)
PS--As a side note, whe have been told by several posters that the OGA Update (KB949810) will not install if the Task Scheduler service is not set on auto and functioning.
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