                                                                Exhibit 23


Consent of independent public accountants



As independent  public  accountants,  we hereby consent to the  incorporation by
reference  of our report dated April 25, 2002  included in this Form 11-K,  into
the Company's  previously filed  Registration  Statement File Numbers  33-71130,
33-63059, 333-17451, 333-61969, 333-82787, 333-30272, and 333-63264.



Arthur Andersen


Minneapolis, Minnesota,
May 9, 2002





