I was flipping through some hearth or home magazine at the lunch table today and saw an add for this thing. I remembered their webpage so I found it on it when I got home today. There has been lots of talk from people about moving air around the house, this thing looks like it might do the trick? http://tjernlund.com/airshare_ventilation.htm I think you could basically make this from stuff at the hardware store but some people like pre-made tested systems instead of making up their own stuff. This company makes some other interesting stuff as well. I need one of those dryer duct boosters, I think my run is about 30ft plus two 90 deg bends. *I have no affiliation with this company, I just thought this thing looked interesting.