Looks great, I have a similar setup. If you diffuse that light, it might get rid of the shadows. I use diffusion in my light box but on some pics I have a small shadow as well. I'm experimenting with various backdrops for my ties and might ditch the light box to save room, but it takes great pics.
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The end result:
Speaking of looking great, that's an impressively good shot for just a couple of clip lights. (Oh, and that jacket is cool as shit. I have one very similar or I'd be PMing you for size).
Edit: I'm beginning to agree with the several people now who have said that the halogens fail because they light over too narrow a color range. I may start experimenting again with normal bulbs. Suited: What are the deets on the bulbs you used? Wattage, was it just a normal broad spectrum or some kind of specialty bulb, etc.? And once I find one that works, presumably I should stock pile the hell out of it....