CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS EXH. 23 As independent public accountants, we hereby consent to the incorporation by reference in Registration Statement Nos. 33-61903, 333-05795, 333-05797, 333-09257, 333-13259, 333-27927, 333-27929 and 333-69717 of our report dated May 15, 1999 included in this Form 10-K for the year ended March 31, 1999. /s/ Arthur Andersen LLP Boston, Massachusetts June 27, 1999