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. 33-49256, 33-65988, 33-90826, 333-29309 and 333-54714. ARTHUR ANDERSEN LLP Indianapolis, Indiana, April 12, 2002.