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                          NINTH AMENDMENT TO LEASE              Exhibit (10)(ii)
                          ------------------------

     This Ninth Amendment to Lease (this "Amendment") is made as of January 31,
2000 by and between American National Bank and Trust Company of Chicago, as
Trustee under Trust Agreement dated April 5, 1990 and known as Trust No. 110513-
07 ("Landlord"), and The Northern Trust Company, an Illinois banking
corporation.

                                    Recitals
                                    --------

     A.  American National Bank and Trust Company of Chicago, as Trustee under
Trust No. 65287 ("Prior Landlord") and Tenant entered into that certain Lease
dated August 27, 1985 (the "Original Lease") as amended by that certain First
Amendment to Agreement of Lease dated August 15, 1986 (the "First Amendment"),
that certain Second Amendment to Agreement of Lease dated August 6, 1987 (the
"Second Amendment"), and that certain Third Amendment to Agreement of Lease
dated May 20, 1988 (the "Third Amendment").

     B.  The Original Lease, as amended by the First Amendment, Second Amendment
and Third Amendment, was assigned by Prior Landlord to Landlord by an assignment
dated April 6, 1990.

     C.  Landlord and Tenant further amended the Original Lease by that certain
Fourth Amendment to Agreement of Lease dated May 1, 1990, that certain Fifth
Amendment to Agreement of Lease dated January 12, 1995, that certain Sixth
Amendment to Agreement of Lease dated November 30, 1995 and, certain Seventh
Amendment dated February 24, 1998 (the "Seventh Amendment") and that certain
Eighth Amendment to Lease dated as of January 31, 2000 (the "Eighth Amendment").
The Original Lease, as amended by all of the aforedescribed amendments, is
hereinafter referred to as the "Lease."  All capitalized terms used in this
Amendment and not otherwise defined shall have the meanings ascribed to them in
the Lease.

     D.  Pursuant to the Lease (including the Eighth Amendment), Tenant now
leases from Landlord approximately 262,492 rentable square feet, (subject to the
terms of the Seventh Amendment), in the building located at 181 West Madison
Street, Chicago, Illinois.

     E.  Tenant has requested to lease from Landlord, and Landlord has agreed to
lease to Tenant, additional space in the Building on a short-term basis and the
parties wish to confirm their agreements regarding such leasing in this
Amendment.

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Landlord and Tenant agree as
follows:

     1.  36th Floor Space.  Effective as of June 1, 2000 and continuing to and
including December 31, 2000 (such period, the "36th Floor Space Term") the
Premises shall be expanded to include that certain space on the 36th floor of
the Building, containing approximately 20,866 rentable square feet and depicted
on Exhibit A attached hereto and incorporated herein by this reference (the
"36th Floor Space").  Notwithstanding anything to the contrary contained herein,
<PAGE>

but subject to the conditions and requirements set forth in Paragraph 4 below,
Tenant shall have the right to enter the Premises and to begin to improve the
36th Floor Space for Tenant's purposes from and after the date on which this
Amendment is fully executed, in which event all of the provisions of the
Original Lease applicable to occupancy of premises shall apply and be in full
force and effect as to the 36th Floor Space, other than, the obligation to pay
Rent, which shall commence on June 1, 2000.

     2.  36th Floor Space Base Rent.  Tenant shall pay Base Rent in
consideration for the leasing of the 36th Floor Space for the 36th Floor Space
Term, at the annual rate of $10.00 per square foot, in monthly installments of
Seventeen Thousand Three Hundred Eighty-Eight and 33/100 Dollars ($17,388.33).
Base Rent shall be paid promptly on the first day of each and every calendar
month during the 36th Floor Space Term.

     3.  Rent Adjustments - Operating Expenses.  During the 36th  Floor Space
Term and with respect to the 36th Floor Space, Tenant shall separately pay
Tenant's Proportionate Share of Operating Expenses and Operating Expense
Deposits as described in Paragraph 5 of the Original Lease with respect to the
36th Floor Space.  Tenant's Proportionate Share with respect to the 36th Floor
Space shall be 2.2716%.  No Rent Adjustment (as described in Paragraph 5.B)
shall be payable with respect to the leasing of the 36th Floor Space.

     4.  Condition of Space and Tenant Improvements.  Landlord shall deliver
possession of the 36th Floor Space to Tenant on or before March 10, 2000.
Tenant agrees to accept the 36th  Floor Space in its "as is" condition as of the
date of this Amendment and agrees that Landlord has made no promise,
representation or agreement regarding any improvements, alterations or
renovations of the 36th Floor Space.  Tenant shall be permitted to construct
leasehold improvements to such space, in accordance with the following
provisions:

     (a) Tenant shall, at Tenant's sole cost and expense cause, to be prepared
     and submitted to the Landlord for Landlord's prior approval, at such time
     as Tenant desires, plans and specifications (the "Tenant's Plans"),
     including, but not limited to, all space plans, working drawings,
     mechanical and engineering drawings disclosing all construction to be
     performed to build out the 36th Floor Space.  Landlord agrees to review and
     either approve or disapprove (and noting with such disapproval the specific
     items not approved) Tenant's Plans within five (5) business days of
     Landlord's receipt of a complete set of Tenant's Plans.  In the event
     Tenant's Plans are disapproved, Tenant shall revise and resubmit Tenant's
     Plans expeditiously and Landlord shall review the same and notify the
     Tenant of its approval or disapproval within three (3) business days
     thereafter in the same manner as required for the initial submittal.
     Landlord's approval shall not be unseasonably withheld or delayed.
     Landlord's authorized representative ("Landlord's Representative") for the
     purpose of Tenant's deliveries or to communications to Landlord shall be
     Andrew Bartucci or such other person as is designated by Landlord in
     writing.  Tenant shall not commence any work in the 36th  Floor Space until
     Tenant's Plans have been approved.

     (b) Tenant is hereby granted the right to utilize contractors of Tenant's
     own choice to construct improvements to the 36th Floor Space, subject to
     Landlord's approval
<PAGE>

     as to the qualifications of such contractor which shall not be unreasonably
     withheld. Landlord hereby approves Valenti, or Bulley Andrews. The
     contractor chosen by Tenant is hereinafter referred to as "Tenant's
     Contractor". All installations, alterations and additions shall be
     constructed in a good and workmanlike manner and only new and good grades
     of material shall be used. Such work performed by Tenant's Contractor shall
     comply with the Americans With Disabilities Act, and with all insurance
     requirements and all other ordinances and regulations of the City of
     Chicago or any department or agency thereof and with the requirements of
     all statutes and regulations of the State of Illinois or any department or
     agency thereof. Tenant shall permit Landlord's Representative (and an
     architect or engineer designated by Landlord) to observe all construction
     operations within the 36th Floor Space performed by Tenant's Contractor,
     provided that no supervision fee shall be charged by Landlord. Such
     observation by persons on behalf of Landlord shall be solely and only for
     the benefit of Landlord. Tenant shall pay to the Landlord the cost of any
     materials purchased from Landlord at Landlord's actual invoice cost for
     said items. Tenant shall not be charged for hoisting. No silence or
     statement by any person acting on behalf of Landlord shall be deemed or
     construed as an assumption by said persons or Landlord of any
     responsibility for or in relation to the construction of the 36th Floor
     Space or any guarantee that the work completed within the 36th Floor Space
     complies with legal requirements, complies with Tenant's Plans, or is
     suitable or acceptable to the Tenant for Tenant's intended business
     purposes. Tenant shall furnish to Landlord, prior to commencement of any
     work in the 36th Floor Space, building permits (or such other documentation
     as is required by the City of Chicago to commence such work) and
     certificates of appropriate insurance. Upon completion of any
     installations, alterations or additions, Tenant shall furnish Landlord with
     building permits (to the extent not previously required and furnished), and
     with contractor's affidavits and full and final waivers of lien covering
     all labor and material expended and used in constructing the 36th Floor
     Space. Tenant shall hold Landlord harmless and indemnify Landlord from all
     claims and costs, damages, liens and expenses which may arise out of or are
     connected in any way with said construction by Tenant's Contractor.

     (c) The cost of all work (the "Work") necessary to build out all of the
     36th Floor Space (including, but not limited to, all labor, material,
     permits and working drawings and design costs) shall be the responsibility
     of Tenant.

     (d) Landlord reserves the right from time to time, but not more often than
     monthly, to require Tenant to furnish partial or final lien waivers (as
     applicable) and sworn contractors' statements and all other reasonable
     information Landlord may request, in writing, so as to enable Landlord to
     determine the status of (i) the preparation or modification of Tenant's
     Plans; (ii) all contracts let or to be let in relation to the Work; (iii)
     the cost of all Work, including the cost of any extras or modifications
     requested by Tenant after Landlord's approval of Tenant's Plans; (iv) the
     status of completion of the Work; (v) the status of payment to all
     contractors, subcontractors and materialmen in relation to the Work; (vi)
     the status of Tenant's obligations to obtain partial and final lien
     waivers, as the situation may require, from all contractors, subcontractors
     and materialmen in relation to the Work; and (vii) the status of any
     adverse claims or disputes
<PAGE>

     with contractors, subcontractors or materialmen in relation to the Work.
     Tenant shall furnish such information as Landlord may reasonably require to
     evidence the foregoing no later than fifteen (15) days subsequent to the
     date the Landlord requests the same, in writing.

     (e) The 36th Floor Space shall, upon expiration of the 36th Floor Space
     Term, be left by Tenant in its then "as is" condition, broom clean and,
     notwithstanding anything to the contrary contained in the Lease, Landlord
     shall have no right to require Tenant to remove any of the improvements
     made to the 36th Floor Expansion Space.

     5.  Brokers.  Tenant represents that, except for Douglas Elliman-Beitler
and Staubach Midwest, LLC, it has not dealt with any real estate brokers in
connection with this Ninth Amendment and, to its knowledge, no broker other than
Douglas Elliman-Beitler and Staubach Midwest, LLC, initiated or participated in
the negotiation of this Ninth Amendment, or submitted or showed the 36th Floor
Space or any other space in the Building to Tenant.  Notwithstanding the
foregoing, no party is entitled to a commission or fee with respect to the
leasing of the 36th Floor Space or the negotiation of this Ninth Amendment.
Tenant hereby agrees to indemnify, defend, and hold Landlord harmless from and
against any and all claims of Staubach Midwest, LLC, or any other party claiming
to have represented Tenant, for broker commission or fees in connection with
this Ninth Amendment.

     Landlord represents that, except for Douglas Elliman-Beitler and Staubach
Midwest, LLC, it has not deal with any real estate brokers in connection with
this Ninth Amendment and, to its knowledge, no broker other than Douglas
Elliman-Beitler and Staubach Midwest, LLC, initiated or participated in the
negotiation of this Ninth Amendment or submitted or showed the 36th Floor Space
or any other space in the Building, on behalf of Landlord, to Tenant.
Notwithstanding the foregoing, no party is entitled to a commission or fee with
respect to the leasing of the 36th Floor Space or the negotiation of this Ninth
Amendment.  Landlord hereby agrees to indemnify, defend, and hold Tenant
harmless from and against any and all claims of Douglas Elliman-Beitler, or any
other party claiming to have represented Landlord, for broker commissions or
fees in connection with this Ninth Amendment.

     6.  Merger.  All negotiations, considerations, representations and
understandings between Landlord and Tenant relating to this Ninth Amendment are
incorporated herein and may be modified or altered only by agreement, in
writing, between Landlord and Tenant.  No modification, termination, or
surrender of the Lease, as modified by this Ninth Amendment, or surrender of the
Premises (including the 36th Floor Space) or any part thereof or of any interest
therein by Tenant shall be valid or effective unless agreed to and accepted, in
writing, by Landlord an no act by any representative or agent of Landlord other
than delivery of such a written agreement and acceptance by Landlord shall
constitute agreement to and acceptance thereof.  Any prior negotiations or
intentions of the parties relating to this Ninth Amendment, whether oral or
evidenced by written documentation dated prior to the date of this Ninth
Amendment, are null and void, unless specifically incorporated herein by
reference.

     7.  Exoneration Clause.  This Ninth Amendment is executed by the
undersigned, American National Bank and Trust Company of Chicago, not
personally, but as Trustee in the
<PAGE>

exercise of the power and authority conferred upon and vested in it as such
Trustee and under the express direction of the beneficiaries of the said Trust.
It is expressly understood and agreed that all of the warranties, indemnities,
representations, covenants, undertaking sand agreements herein made on the part
of the Trustee are undertaken by it solely in its capacity as Trustee and not
personally. No personal liability or personal responsibility is assumed by or
shall at any time be asserted or enforceable against the Trustee on account of
any warranty, indemnity, representation, covenant, undertaking or agreement of
the Trustee in this instrument.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed as of the day and year first above written.

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<S>                                           <C>
LANDLORD:                                     AMERICAN NATIONAL BANK AND TRUST COMPANY OF
                                              CHICAGO, not individually, but solely as Trustee
                                              under Trust Agreement dated April 5, 1990 and
                                              known as Trust No. 110513-07


                                              By:  /s/ Mark DaGrazia
                                                 --------------------------------
                                              Title:  Trust Officer
                                                    -----------------------------


                                              Attest:  Attestation not required by American
                                              National Bank and Trust Company of Chicago Bylaws

                                                                       ______________ Secretary

TENANT:                                       THE NORTHERN TRUST COMPANY



                                              By:  /s/ Wayne LaChance
                                                 --------------------------------
                                              Title:  Vice President
                                                    -----------------------------

</TABLE>
<PAGE>

                                   EXHIBIT A

                               36th  FLOOR SPACE