Exhibit 23.1

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of our
report included in this Form 10-K, into the Company's previously filed
Registration Statement File Nos. 333-31751, 333-67265 and 333-62618.


                                                         /s/ Arthur Andersen LLP

Boston, Massachusetts
March 21, 2002