If I remember correctly, once you've downloaded dedynamic.ax from doom9's, you must register it by typing (in windows' start menu --> run):
Code:
regsvr32.exe [path_to_dedynamic.ax]\dedynamic.ax
[if you've copied dedynamic.ax in your windows\system32 directory (where regsvr32.exe is), typing
regsvr32.exe dedynamic.ax should be enough]
then you can enable dedynamic filter in bsplayer and it should be configurable through
right-click-->properties-->dedynamic filter when playing a movie.
(everything I tell you here is taken right out of my memory as I don't use it anymore -- don't need it)
I don't know anything about equalizer ;)