I have just been given a flash bracket that has a hot-shoe mount for an off camera flash unit, My problem is that I want to use the my Nikon SB-800 with my SC-28 lead, the lead has a screw mount at the bottom so I can't attach lead to the bracket,

My question is, is there some sort of unit that will fit into the hot-shoe bracket that has a screw at the top that can be can screwed into the bottom of the SC-28 lead, If not, any Ideas?
Thanks