[compiz] Enable Plugin from DBus

[Carlo Capocasa]

Hi,

how can I enable a plugin from the command line?

I know how to *activate* it from dbus, i.e. do the equivalent of 
pressing "Ctrl-F9" or whatever the hotkey is.

But I don't know how to *enable* it, i.e. do the equivalent of clicking 
the "enabled" checkbox in compizconfig settings manager.

Thanks!

Carlo