im interested in trying out these wireless radio trigger/receivers cos i dont like having my pop up flash interfering in the pic.. ive been reading through pages and pages in the alpha strobist group but the threads go in lots of directions and my brain is about to explode. it seemed like some people had to fire the flash attached to the camera to get it to work but for others that didnt even work.. i have the hvl42am. and my sony adapter for my lightstand has the little groove cut into it for wireless.