

                                                                    Exhibit 23


                    Consent of Independent Public Accountants


         As   independent   public   accountants,   we  hereby  consent  to  the
incorporation  by reference of our reports dated  January 22, 1998,  included in
this Form 10-K into the Company's  previously  filed  registration  statement on
Form S-3 (No. 33-65772).





ARTHUR ANDERSEN LLP
Dallas, Texas,
  February 23, 1998



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