FYI: I've packaged the profile and the icon into the new package "Office Communicator plugin for Conversations and Contacts". The package depends on account-plugin-haze and pidgin-sipe to drag in all necessary packages. You can find it in fremantle extras-testing.

This of course doesn't address the SSL server certificate issue. You still need to run Pidgin at least once to create a SSL connection to your OCS server.