Equalization Please HELP

Is there a plug-in for a EQ Isolator ??? Iam trying to make a DJ style mix , I need to remove the bass , mid or highs from some songs .The eq I have is Mitch Golden & Vaughan Johnson ,it is a Graphic EQ ,it does lower or higher the frequencies but does not eliminate them like an Isolator would. :cry: Any help would be appreciated .