How do I cheaply reduce/eliminate the draft from a chimney with an illegal/unused wood stove installed?

You can see a picture of it here: http://www.flickr.com/photos/cooprider/4087424607/ I recently purchased the house and figured the stove had been installed illegally. I confirmed that with the town this week. Now that the temperature is dropping it is apparent that the chimney and/or the stove is letting a lot... show more You can see a picture of it here: http://www.flickr.com/photos/cooprider/4087424607/

I recently purchased the house and figured the stove had been installed illegally. I confirmed that with the town this week. Now that the temperature is dropping it is apparent that the chimney and/or the stove is letting a lot of the cold into my living room. Unfortunately, my finances are fairly exhausted at this point so I am looking for something cheap, and preferably something that I can do myself.
Update: I should also mention that I am married, so since the stove is in the living room my wife cares somewhat about how it looks. So in addition to being cheap and easy, the solution also has to look nice. I realize that may not be possible, but I thought I would throw it out there.
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