Exhibit 23(d)

 
               [LETTERHEAD OF ARTHUR ANDERSEN LLP APPEARS HERE]



                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

    
As independent public accountants, we hereby consent to the use of our reports 
(and to all references to our firm) included in or made a part of this
Amendment I to Registration Statement on Form S-3 File No. 333-64215.     


                                                         /s/ Arthur Andersen LLP


    
Fort Worth, Texas,
  December 11, 1998