I recently came across NetWrix, a software company that specializes in system administration tools and utilities. They seem to really have hit a niche that has been a pain point for many administrators over the years. Whats even better is that NetWrix offers free versions of several of their products and not just limited evaluations either.
This procedure comes in handy if you have forgotten the unlock/uninstall password for your installation of Trend Micro OfficeScan. I have also had to use similar procedures for migration projects where it was desired to have a different AntiVirus installation upon migration.