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                                                                    EXHIBIT 23.1


                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of
our report dated February 17, 2000, included in this Form 10-K into the
Company's previously filed Registration Statements File No. 333-50289 and No.
333-58817.

/s/ ARTHUR ANDERSEN LLP

Houston, Texas
March 30, 2000