Document:

<PAGE>

                                  EXHIBIT 4.8

                    AGREEMENT AS TO EXPENSES AND LIABILITIES

         AGREEMENT dated as of _______________ 2001, between Spectrum
Bancorporation, Inc., an Iowa corporation (the "Company"), and Spectrum Capital
Trust II, a Delaware business trust (the "Trust").

         WHEREAS, the Trust intends to issue its Common Securities (the "Common
Securities") to, and receive ___% Junior Subordinated Debentures due 2031 (the
"Junior Subordinated Debentures") from, the Company and to issue and sell ___%
Cumulative Preferred Securities (the "Preferred Securities") with such powers,
preferences and special rights and restrictions as are set forth in the Amended
and Restated Trust Agreement of the Trust dated as of ____________________,
2001, as the same may be amended from time to time (the "Trust Agreement"); and

         WHEREAS, the Company will directly or indirectly own all of the Common
Securities of the Trust and will issue the Junior Subordinated Debentures.

         NOW, THEREFORE, in consideration of the purchase by each holder of the
Preferred Securities, which purchase the Company hereby agrees shall benefit the
Company and which purchase the Company acknowledges will be made in reliance
upon the execution and delivery of this Agreement, the Company, including in its
capacity as holder of the Common Securities, and the Trust hereby agree as
follows:

                                    ARTICLE I

         SECTION 1.1. GUARANTEE BY THE COMPANY. Subject to the terms and
conditions hereof, the Company, including in its capacity as holder of the
Common Securities, hereby irrevocably and unconditionally guarantees to each
person or entity to whom the Trust is now or hereafter becomes indebted or
liable (the "Beneficiaries") the full payment, when and as due, of any and all
Obligations (as hereinafter defined) to such Beneficiaries. As used herein,
"Obligations" means any costs, expenses or liabilities of the Trust other than
obligations of the Trust to pay to holders of any Preferred Securities or other
similar interests in the Trust the amounts due such holders pursuant to the
terms of the Preferred Securities or such other similar interests, as the case
may be. This Agreement is intended to be for the benefit of, and to be
enforceable by, all such Beneficiaries, whether or not such Beneficiaries have
received notice hereof.

         SECTION 1.2. TERM OF AGREEMENT.  This Agreement shall terminate and be

<PAGE>

of no further force and effect upon the later of (a) the date on which full
payment has been made of all amounts payable to all holders of all the Preferred
Securities (whether upon redemption, liquidation, exchange or otherwise) and (b)
the date on which there are no Beneficiaries remaining; provided, however, that
this Agreement shall continue to be effective or shall be reinstated, as the
case may be, if at any time any holder of Preferred Securities or any
Beneficiary must restore payment of any sums paid under the Preferred
Securities, under any Obligation, under the Preferred Securities Guarantee
Agreement dated the date hereof by the Company and Wilmington Trust Company as
guarantee trustee or under this Agreement, for any reason whatsoever. This
Agreement is continuing, irrevocable, unconditional and absolute.

         SECTION 1.3. WAIVER OF NOTICE. The Company hereby waives notice of
acceptance of this Agreement and of any Obligation to which it applies or may
apply, and the Company hereby waives presentment, demand for payment, protest,
notice of nonpayment, notice of dishonor, notice of redemption and all other
notices and demands.

         SECTION 1.4. NO IMPAIRMENT. The obligations, covenants, agreements and
duties of the Company under this Agreement shall in no way be affected or
impaired by reason of the happening from time to time of any of the following:

         (a) the extension of time for the payment by the Trust of all or any
portion of the Obligations or for the performance of any other obligation under,
arising out of, or in connection with, the Obligations;

         (b) any failure, omission, delay or lack of diligence on the part of
the Beneficiaries to enforce, assert or exercise any right, privilege, power or
remedy conferred on the Beneficiaries with respect to the Obligations or any
action on the part of the Trust granting indulgence or extension of any kind; or

         (c) the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement, composition or readjustment of debt of,
or other similar proceedings affecting, the Trust or any of the assets of the
Trust.

         The Beneficiaries shall not be obligated to give notice to, or obtain
the consent of, the Company with respect to the happening of any of the
foregoing.

         SECTION 1.5. ENFORCEMENT. A Beneficiary may enforce this Agreement
directly against the Company, and the Company waives any right or remedy to
require that any action be brought against the Trust or any other person or
entity before proceeding against the Company.

<PAGE>

                                   ARTICLE II

         SECTION 2.1. BINDING EFFECT. All guarantees and agreements contained in
this Agreement shall bind the successors, assigns, receivers, trustees and
representatives of the Company and shall inure to the benefit of the
Beneficiaries.

         SECTION 2.2. AMENDMENT. So long as there remains any Beneficiary or any
Preferred Securities are outstanding, this Agreement shall not be modified or
amended in any manner adverse to such Beneficiary or to the holders of the
Preferred Securities.

         SECTION 2.3. NOTICES. Any notice, request or other communication
required or permitted to be given hereunder shall be given in writing by
delivering the same by facsimile transmission (confirmed by mail), telex, or by
registered or certified mail, addressed as follows (and if so given, shall be
deemed given when mailed or upon receipt of an answer back, if sent by telex):

                   Spectrum Capital Trust II
                   c/o Wilmington Trust Company
                   Rodney Square North
                   1100 North Market Street
                   Wilmington, DE  19890-0001
                   Facsimile No.: (302) 651-1576
                   Attention: Corporate Trust Administration

                   Spectrum Bancorporation, Inc.
                   10834 Old Mill Road, Suite One
                   Omaha, Nebraska 68154-2648
                   Facsimile No.: (402) 333-8339
                   Attention:  President

         SECTION 2.4. GOVERNING LAW. This Agreement shall be governed by and
construed and interpreted in accordance with the laws of the State of Delaware
(without regard to conflict of laws principles).

<PAGE>

         THIS AGREEMENT is executed as of the day and year first above written.

                                 SPECTRUM BANCORPORATION, INC.

                              By:
                                 --------------------------------------
                                 Deryl F. Hamann, Chairman and
                                 Chief Executive Officer

                                 SPECTRUM CAPITAL TRUST II

                              By:
                                 --------------------------------------
                                 Daniel A. Hamann, Administrative Trustee<PAGE>

                                  EXHIBIT 4.9

            THIS CAPITAL NOTE IS NOT A DEPOSIT AND IS NOT INSURED BY
            THE FEDERAL DEPOSIT INSURANCE CORPORATION. THE PRINCIPAL
            AMOUNT OF THIS CAPITAL NOTE IS SUBORDINATED IN RIGHT OF
     PAYMENT OF PRINCIPAL TO CERTAIN SENIOR INDEBTEDNESS OF THE COMPANY AS
                        DESCRIBED ON THE REVERSE HEREOF.

                         SPECTRUM BANCORPORATION, INC.
                           CAPITAL NOTE, SERIES 2001

No.  -1-                                                       $35,000,000
Issue Date:            , 2001

    KNOW ALL MEN BY THESE PRESENTS that Spectrum Bancorporation, Inc., an
Iowa corporation (the "Company"), for value received, does hereby covenant
and promise to pay to Capital Investors, LLC, a Nebraska limited liability
company, the registered holder of this Capital Note, or registered assigns,
the principal sum of THIRTY-FIVE MILLION DOLLARS ($35,000,000.00)
on              , 2011 and to pay the registered holder hereof interest
accrued at the fixed rate of __% per annum on the unpaid principal balance of
this Capital Note.

    This Capital Note is one of a series of capital notes of like date and tenor
numbered consecutively (the "Series 2001 Notes") issued by the Company as fully
registered notes, without coupons, in denominations of $50,000 and integral
multiples thereof, in an aggregate principal amount not to exceed $40,000,000.
Series 2001 Notes may be exchanged for a like aggregate principal amount of
Series 2001 Notes of other authorized denominations, without payment of any
charge other than a sum sufficient to reimburse the Company for any tax or other
governmental charge incident thereto.

    Reference is hereby made to the further provisions of this Capital Note set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

    IN WITNESS WHEREOF, the Company has caused this Capital Note to be executed
as of the         day of              , 2001.

                                            SPECTRUM BANCORPORATION, INC.

Attest:                                     By:
                                                -------------------------------
                                            Its:  Chairman and CEO
---------------------------------
      Secretary

<PAGE>

    For the purposes hereof, the "Prime Rate" means the prime rate as reported
in the WALL STREET JOURNAL as in effect on each date of determination or on the
next following business day if such rate is not so reported for such date.

    The Company will make payments of principal and interest on this Capital
Note to the person who is the registered holder of this Capital Note at the
close of business on the last day of the first full calendar month immediately
preceding the then-current Interest Payment Date, or if such day is not a
business day, the business day next preceding such Interest Payment Date. The
Company will pay principal and interest in money of the United States that at
the time of payment is legal tender for payment of public and private debts. The
Company shall make such payments of principal and interest by check payable in
such money mailed to the registered holder's address as it appears on the
records of the Company.

    Notwithstanding any provision of this Capital Note to the contrary, payment
of the principal of this Capital Note is subordinated and junior in right of
payment to the Company's obligation to pay principal and interest on its
indebtedness to LaSalle Bank N.A.

    This Capital Note may be redeemed prior to maturity by the Company, in its
sole discretion, in whole or in part, upon prior written notice to the
registered holder at any time more than three years after the date of issue at a
redemption price equal to the unpaid principal amount plus accrued interest as
of the date of redemption without premium or penalty. Such notice of redemption
shall be mailed by first class mail at least thirty (30) days and not more than
ninety (90) days prior to the date fixed for redemption to the registered
holders of the Series 2001 Notes to be redeemed at their registered addresses as
they shall appear upon the registry books of the Company.

    This Capital Note is not convertible into common stock or any other security
of the Company. The registered holder of this Capital Note shall be treated as
its owner for all purposes. The registered holder shall not have any of the
rights of a shareholder of the Company, including the right to vote or the right
to receive dividends.

    Any existing default may be waived with the consent of the holders of a
majority in principal amount of the Series 2001 Notes then outstanding. Any such
waiver by the registered holders of the Series 2001 Notes shall be conclusive
and binding upon such holder and upon all future holders of this Capital Note
and any note issued in exchange or substitution herefor, irrespective of whether
or not any notation of such waiver is made upon this Capital Note or such other
note.

    This Capital Note is unsecured.

    THIS CAPITAL NOTE IS BEING HELD FOR INVESTMENT PURPOSES. THE SALE, PLEDGE,
    ASSIGNMENT OR OTHER TRANSFER OF THIS CAPITAL NOTE CANNOT BE EFFECTED UNLESS,
    IMMEDIATELY PRIOR TO THE TIME SET FOR TRANSFER, COUNSEL FOR THE COMPANY
    DETERMINES THAT SUCH TRANSFER CAN BE EFFECTED WITHOUT VIOLATION OF THE
    SECURITIES ACT OF 1933.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00019-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00019-of-00352.parquet"}]]