I wonder if there's a webcam that will show the smoke after each ballot.
I don't know if you'll be able to see it, but Vatican TV might be carrying this over the internet.
http://www.vatican.va/news_services/television/index.htm
you may find a webcam here:
http://www.vatican.va/news_services/television/index.htm
(the Vatican's official television network)
or here:
http://story.news.yahoo.com/news?tmpl=s&u=/pope1/static