Bob, I also have a 10 x 10 EZup. First off, if you didn't get the sides for the canopy, I would highly recommend you get them for all four sides, three sides minimum.
For setup, I made a 6 x 6 lattice panel to hang things from. I place this on one side and give it extra support (from a gust of wind) by attaching it to the tent rails at the top. On the opposite side I put up those plastic shelves that come apart. This is where I put all my non-hanging items. In the back I have a small 4ft table that I use to make transactions, wrap purchases, etc...covered with a tablecloth to the ground to hide my boxes, cash box, etc...
To attract attention from passer-byers, I have an "A" shaped pegboard that I place in the center as far out into the path of the crowd as possible. This still allows people to walk into my both from either side of that pegboard display. Also on the 2 front polls, I attach those wire grid shelves in the verticle position to hang more things from. This definately gets the eye of people who then venture in to see more!
I think I still have pics of the lattice panel and some craft fair pics in my album. As stickman noted, visit as many different craft fairs as you can and observe what others use for display and set-up.
Linster