From the category archives:

Update Manager

Installing the vSphere 4.0 Host Update Utility

by bunchc on August 26, 2010

Upgrading ESXi 4 to Update 1 – Host Update Utility

by bunchc on November 30, 2009

Spending an Afternoon with the Host Update Utility

by bunchc on July 27, 2009

Update Manager – Changing Default Patch Location

by bunchc on November 17, 2008