Caspol Security programmatically?

Hi All,

Has anybody created code groups programmatically? All I
want to do is install a new union code group in the
machine\all_code\my_computer_zone. It seems to ignore
SecurityManager.SavePolicy() command. I can create new
groups under the all_code group though?

I would also like to use the installer class to add and
remove the groups? has anybody done this. I achieved the
desired affect by overriding 'OnAfterInstall'
and 'OnAfterUninstall' but I was hoping there was a
better way.

Please help....