how can i use dsp plugin for bsplayer??

HEy,
The dsp plugin option is greyed out for my bsplayer. I'v copy'd dsp_plug.dll in the plugins dir but the dsp option is still greyed out.. I also have the dsp plugin in the winamp plugin dir, and that's running fine with winamp.
i really have no idea how to get dsp plugin work for bsplayer now... can anyone help me out?
greetz
Chris