Exhibit 23.1
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation by
reference of our report included in this Form 20-F, into the Company's
previously filed Registration Statement on Form S-8 File No. 333-61776.

/s/ Arthur Andersen LLP

Arthur Andersen LLP

Boston, Massachusetts
May 30, 2002