Well, photobucket is not liking me right now. I'll just have to show you the final brackets. I'll try again tomorrow to get it to let me show you the process. They're fairly simple
With these brackets in place of the legs you can use whatever method (chain, cable, whatever) you want to hang your lights. No drilling into the case or modifying the light at all.
I used aluminum for these and they support a 24" light very easily. Stainless rods are also available and, while most likely more difficult to bend, would be more rigid and I would assume could hold more weight. I really don't think it would matter in this application anyhow.