<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>3
<FILENAME>ar6856nnex.txt
<TEXT>
                                                                       EXHIBIT 1

                             JOINT FILING AGREEMENT

         The undersigned hereby agree to the joint filing of the Schedule 13G to
which this Agreement is attached.


                           Dated:  February 13, 2002


                         ARTISAN INVESTMENT CORPORATION
                             for itself and as general partner of
                             ARTISAN PARTNERS LIMITED PARTNERSHIP


                         By: /s/ Andrew A. Ziegler
                             -----------------------------------
                                    Andrew A. Ziegler
                                    President


                          ANDREW A. ZIEGLER

                          /s/ Andrew A. Ziegler
                          -----------------------------------------------


                          CARLENE MURPHY ZIEGLER

                          /s/ Carlene Murphy Ziegler
                          -----------------------------------------------

<PAGE>

</TEXT>
</DOCUMENT>
