Amazon has a ANT751 antenna for $22.50 + shipping.
I'll probably use either this J-mount,
http://www.solidsignal.com/pview.asp...u=610370579954
or this universal tripod,
http://www.solidsignal.com/pview.asp...%28RONNIE-5%29
and attach it over the porch. Since I've never done this before, are there some good instructions for mounting the antenna and running the coax off the roof?