EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports included in this Form 10-K, into the Company's previously filed Form S-8 Registration Statements File Nos. 333-63103 and 333-42895. /s/ ARTHUR ANDERSEN LLP - - - - - - ---------------------------- ARTHUR ANDERSEN LLP Chicago, Illinois February 17, 2000