EX-23 6 c68167ex23.txt CONSENT OF ARTHUR ANDERSEN LLP EXHIBIT 23 CONSENT OF ARTHUR ANDERSEN LLP Consent of independent public accountants As independent public accountants, we hereby consent to the incorporation of our report incorporated by reference in this Form 10-K, into the Company's previously filed Registration Statement File Nos. 33-57503, 33-60157, 333-05463, 333-21007, 333-77765, 333-94451 and 333-84478. Arthur Andersen LLP Minneapolis, Minnesota March 18, 2002