TigerDirect, surprisingly, has some decent directional antennas. I've had decent luck with http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?E

TigerDirect, surprisingly, has some decent directional antennas. I've had decent luck with http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=713934&CatId=374 http://www.tigerdirect.ca/applications/SearchTools/item-deta..., but http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=4823733&CatId=374 http://www.tigerdirect.ca/applications/SearchTools/item-deta... looks pretty decent as well. As for setting it up, I used it a pretty low-tech routine: set the antenna, walk around with a power meter, adjust antenna, and repeat. If you really want to get into it, put some thought into how the walls and other large objects are laid out, and take that into account when setting up your antenna.