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 Numbers 33-85972, 33-85956, 33-79176, 33-71772,
333-3236 and 333-3066.


ARTHUR ANDERSEN LLP


Minneapolis, Minnesota,
March 14, 2002