You can install Deskzilla to access already existing Bugzilla installations, such as publicly available Bugzilla servers for numerous open-source projects. If you plan to start your own server, you should install Bugzilla first.
No server-side patches required.
I18NNote: Bugzillas Bugzilla servers with localized interfaces are not yet supported (Deskzilla may work anyway, please try and let us know if there are problems).