Got this from DEAL EXTREME and put it in a ADVANCED AUTO 2 C 3 Watt led Flashlight. Couldnt have been any easier. Desoldered the 3 watt, put the new one in and resoldered. VERY BRIGHT. Twice as bright as the original LED. Somebody else in here had done this and posted about it but I couldnt find the thread. Sorry no pictures.
http://www.dealextreme.com/details.dx/sku.1342
http://www.dealextreme.com/details.dx/sku.1342
