Adium + Office Communicator

We are required to use Office Communicator at my work for instant messages. I am currently using the multi-protocol client Adium for my other accounts (AIM, Gtalk). I don't see a way to add an account for Office Communicator, so I'm wondering if there is any 3rd party support for this? All of the searching I've been doing only points to running a separate application (which I already use), or to requests to add this feature to Adium. I've haven't tracked down a 3rd party module, so I thought I would ask here if anyone knows of one.