Need vine suggestions for a shady area (Zone 5)

Hello All,
I am looking for a vine to cover a trellis on the east side of my house. There's only about 10 feet between ours and the neighbor's so the area is in open shade most of the day. We just got the house last year and the side yard is bare so I'm starting fairly fresh.
One of the reasons I fell in love with our old house is the most lovely east bay window. Great for starts and houseplants...but looks out directly into our neighbor's bedroom! Not my favorite view :) I'm dreaming of a privacy trellis type thing covered in green. Any suggestions?
Thanks in advance,
Planti

There was some discussion here:
http://davesgarden.com/forums/t/492267/

Thanks! That's exactly what I needed :)
Jacki