Is there any way to push out Microsoft Update (
http://update.microsoft.com/microsof....aspx?ln=en-us ) to
the clients so they can download updates from Microsoft Update instead of
Windows Update.

Ms Update includes updates for Office etc. After installing Microsoft Update
manually by visiting the site Automatic Updates downloads the needed updates
for Office etc. The site installs a ActiveX control I think, does Snapshot
work with ActiveX?