I thought getting a decent antenna together would be the hard bit but found a couple of antenna images, one really cheap and the other looking quite manageable.
http://www.setileague.org/photos/wghorn/aa2tx01.jpg
http://www.setileague.org/photos/wghorn/horn0302.jpg
And some guy built this in his back yard
http://www.setileague.org/photos/sara/reberant.jpg