Actually I'm using two registry changes to eliminate it asking for the uninstall password. Then, and this is the part I have not tested just yet, I will either use psexec or wmi to run the uninstaller on each machine.

Version 11 sucks, IMHO. It's slow, the management is clunky, and it seems every time you turn around Symantec is raising prices. I'm most likely going to point my customers to Sunbelt Software's Vipre Enterprise. They are even offering competitive upgrades right now too.