<PAGE>
Exhibit 23
ARTHUR ANDERSEN LLP
CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
As independent public accountants, we hereby consent to the incorporation of
our reports dated July 28, 2000 (except with respect to the matter discussed
in the subsequent event note, as to which the date is August 16, 2000)
included in this form 10-K, into the Company's previously filed Registration
Statement (File Nos. 33-35760, 33-57615, 33-60071, 33-64383, 33-63715,
33-63717, 33-59002, 33-49212, 33-33245, 33-33244, 333-17987, 333-18385,
333-41427, 333-71839, 333-71797, 333-91345 and 333-96173).
/s/ Arthur Andersen LLP
-----------------------------
Arthur Andersen LLP
Chicago, Illinois
September 28, 2000
