Exhibit 23.1


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

     As independent public accountants, we hereby consent to the incorporation
of our report dated February 1, 2002, included in and incorporated by reference
in this Form 10-K, into the Company's previously filed Registration Statements
on Form S-8 File No. 33-28344, File No. 33-29113, File No. 33-41757, File No.
33-59045, File No. 33-59081, File No. 333-94713 and File No. 333-63298. It
should be noted that we have not audited any financial statements or performed
any audit procedures subsequent to the date of our report.


                                                  /s/ ARTHUR ANDERSEN LLP
                                                  ------------------------------
                                                  ARTHUR ANDERSEN LLP






Boston, Massachusetts,
April 1, 2002