
                                                                    EXHIBIT 23.1

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of our
reports included in this Form 10-K, into the Company's previously filed
Registration Statements, File Nos. 333-16085 and 333-58553.

ARTHUR ANDERSEN LLP

Houston, Texas
March 28, 2000
