Hey, I can't get fences to create when right clicking in windows 7 64 bit. I guess support hasn't been added yet, but I wanted to say this.
Also, it would be nice if individual fences could have their icons resized (In other words, each window having all icons in it the same size, but each window can change the sizes of all icons in it, and other windows can be different sizes). I'm speaking from what I plan to do with fences, but I would imagine it would help.
One other thing, since I can't run fences yet, can fences themselves be moved around easily? I'm going to put it on this machine:

That is a core 2 e6400 (launch with 2 meg cache disabled), 4 gigs 1066 ram, ati 5750 (for triple screens, and no issues with drivers), dell 2407 1920x1200 portrait, lg w2361v 23" 1920x1080, and a 1024x768 15" elo touchscreen. I plan to use fences on the touchscreen.