hi sasko, i am going to switch the secondary master to the primary master as steven james instructed. i want to do this monday morning. if you can stop by, i would like your help and to ask some questions. jerry -- Dr. Gerard P. Gilfoyle Physics Department e-mail: ggilfoyl@richmond.edu University of Richmond, VA 23173 phone: 804-289-8255 USA fax: 804-289-8482