No problem. When I was talking about wrapping up your wrists I was talking about the way boxers wrap them up. However, I did a little search on google and found a product that might help, it's called the "Neoprene Wrist Wrap Support".
From this site:
http://www.e-bogu.com/category_s/88.htm>
NEOPRENE Wrist Wrap Support: Adjustable size with Velcro for perfect fit. Easy to wear, and holds you wrist firmly
Now, I never tried this product so I'm not sure how well it protects one's wrist but it looks pretty good and some protection is better than no protectin in your case. I'm also not sure if it will hamper your training in bjj but they should be good for impact training (punching bags, focus gloves, stand up sparring etc.), as long as you continue to take your former injury into consideration. Talk to your instructor and see what he thinks. You might also want to check a few other MA stores for better prices and different products. When it doubt froogle it or check ebay. Good luck.