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                                                                   EXHIBIT 10.21

                [LETTERHEAD OF MAUNSELL CONSULTANTS ASIA LTD.]

                                                               2nd December 1996

                                                         Personal & Confidential
                                                         -----------------------
Dear Francis,

               Appointment of Chairman & Chief Executive Officer
               -------------------------------------------------

     I am pleased to confirm your appointment as Chairman & Chief Executive
Officer of the firm effective from 1st January 1997. Your terms and conditions
of employment will be as set out below:

1.   Commencement      Your appointment as Chairman & CEO will commence on 1st
                       January 1997.

2.   Salary            Your salary effective from 1st January 1997 will be
                       HK$146,000 per calendar month. This will be reviewed from
                       time to time.

3.   Bonus             A bonus of approximately one average month's salary of
                       the preceding calendar year will normally be paid at
                       Chinese New Year to all staff who have worked for the
                       full calendar year and whose services have been
                       satisfactory. Staff employed for less than the full
                       calendar year will normally receive a pro-rata bonus.

4.   Working Hours     Normal office hours are from 9:00 a.m. to 5:30 p.m.
                       Monday to Friday with a 1 hour break for lunch.

5.   Overtime          Overtime working may be necessary from time to time as
                       required for the work in hand, but payment for overtime
                       is not made to Directors.

6.   Leave             Leave will accrue at the rate of 25 working days each
                       year.

7.   Medical           You and your wife will be covered by our medical scheme
                       (Plan 1), details of which is attached. You should note
                       that this scheme provides limited cover and excludes
                       dental treatment, optical treatment and all maternity
                       cover.
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                                      -2-

8.   Provident Fund          You will remain in our Provident Fund Scheme which
                             is organised through American International
                             Assurance Co. Ltd. We will pay the Employer's
                             contribution.

9.   Housing Allowance       We will pay you a housing allowance of HK$46,000
                             per month. This will be reviewed from time to time.

10.  Travel Allowance        You and your wife will each receive an overseas
                             travel allowance of HK$40,000/annum. You will also
                             receive a local travel allowance of HK$9,600/annum.

11.  Insurance               You will be insured in accordance with the
                             Employees' Compensation Ordinance and under our
                             Group Life Insurance Policy(ies).

12.  Professional Society    We will reimburse you your annual subscription for
     Membership              membership at any grade of The Hong Kong
                             Institution of Engineers and one other relevant and
                             appropriate professional learned society or
                             institution.

13.  Club Membership         We will pay the monthly subscription of a club in
                             Hong Kong of which you are a member.

14.  Determination           We may at any time determine your engagement by
     of Engagement           giving you 6 months notice in writing or by paying
                             you 6 month salary in lieu of notice and, except as
                             otherwise expressly provided, you will have no
                             further claim on us.

                             You may terminate your service during the course of
                             your engagement by giving a minimum of 6 months
                             notice in writing or by paying to us 6 month salary
                             in lieu of notice.

                             If we terminate your engagement for reason of
                             misconduct, you will forfeit all accrued but
                             untaken leave.
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     I shall be pleased to have your confirmation in writing that you accept
these revised terms and conditions.  To do this, please sign and date the
attached copy and return it to us as soon as possible.

                                       Yours sincerely,
                              for MAUNSELL CONSULTANTS ASIA LTD

                                       /s/ J.W. Downer
                                       (J.W. Downer)
                                          Chairman

Encl.

cc:  Personnel
     Accounts

I accept the appointment on the terms and conditions set our above.

Signed:  /s/ Francis S.Y. Bong
         ------------------------------
          A.K.I.D. Card No. A 203777(A)

Date:          4-12-96
         ------------------------------<PAGE>

                                                                   EXHIBIT 10.22

                    [LETTERHEAD OF SIR WILFRID NEWTON CBE]

14 October 1998

Mr D N Odgers
Australia

Dear David.

                       Guy Maunsell International Limited
                       ---------------------------------
                 Group Chief Executive -  Terms of Employment
                 --------------------------------------------

I am writing to confirm the terms of your appointment when you take up your
position as Group Chief Executive based in London. I shall be grateful if you
will sign and return the copy of this letter, which is enclosed.

The terms which have been agreed between us, are as follows:

1.  Salary:
    (L) 140,000 per annum subject to annual review.

2. Housing Allowance:
   A contribution towards housing cost up to (L) 1,000 per week (note
   personal tax will have to be paid on this allowance.)

3. Car Allowance:
   (L) 10,000 per annum.

4. Annual Leave:
   25 working days per annum.

5. Superannuation:
   You will continue to be a member of the Australian scheme and GMIL will make
   the employer's contribution.

6. Health Cover:
   As for UK directors for you and your wife.

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                                      -2-
7.   Home Leave Travel:
     Two business class return fares in each year for your wife and one for
     yourself.

8.   Re-Location Cost:
     GMIL will reimburse reasonable cost of your move to London and your
     eventual return to Australia.

9.   Term of Appointment:
     The term of your appointment is for three years. You will be required to
     give 6 months notice of your intention to leave the company's employment
     and the company in turn will give you one year's notice if it wishes to
     terminate your employment before completion of your three year term. If the
     Company wishes to extend your term beyond three years it will discuss and
     agree any extension with you one year before completion of your three year
     term.

You will, I am confident, fill the post of Group Chief Executive with
distinction and I wish you great success for the future.

With kind regards.

/s/ Wilfrid Newton

Wilfrid Newton

Acceptance Confirmed
--------------------

/s/ D N Odgers

D N Odgers<PAGE>

                                                                  EXHIBIT 10.20

                             THE 1818 FUND III, LP

                               February 8, 2002

US Unwired Inc.
901 Lakeshore Drive
Lake Charles, Louisiana 70601
Attention: Robert Piper

IWO Holdings, Inc.
52 Corporate Circle
Albany, New York 12203
Attention: Steven Nielsen

      Re: Registration Rights Agreement

Gentlemen:

   Reference is made to (a) the Agreement and Plan of Merger dated as of the
date hereof by and among IWO Holdings Inc. ("IWO"), US Unwired Inc. ("USU") and
a wholly-owned subsidiary of USU (the "Merger Agreement"); and (b) the
Registration Rights Agreement dated as of October 29, 1999 between US Unwired
Inc. and The 1818 Fund III, LP, as amended to date (the "1818 RRA").
Capitalized terms used in this letter shall have the meanings ascribed to them
in the Merger Agreement.

   The undersigned hereby consents to USU entering into the Registration Rights
Agreement substantially in the form attached as Exhibit D (the "New RRA") to
the Merger Agreement in connection with consummation of the Merger and related
transactions, and agrees that: (i) the undersigned will not exercise any demand
registration rights under the 1818 RRA during the first 120 days following the
Effective Time of the Merger without the consent of Investcorp International
Inc., (ii) notwithstanding any provisions of the 1818 RRA to the contrary,
(A)1818 shall have no right to participate in a demand or shelf registration
pursuant to the New RRA (provided that the New RRA shall provide that the
stockholders of USU who will have registration rights under the New RRA shall
have no right to participate in a demand or shelf registration pursuant to the
1818 RRA) and (B) in the event that USU proposes to file a registration
statement (other than pursuant to a demand or shelf registration under the 1818
RRA or the New RRA) and USU stockholders have piggyback registration rights
under both the 1818 RRA and the New RRA, then the registration rights holders
under the 1818 RRA and the New RRA shall share, at the same priority level,
such piggyback rights pro rata on the basis of the number of shares requested
for inclusion in such registration statement by holders entitled to such
inclusion under the 1818 RRA, on the one hand, and holders entitled to such
inclusion under the New RRA, on the other hand, and (iii) that the execution,
delivery and performance of the New RRA does not and will not constitute a
breach or violation of the 1818 RRA.

   This letter agreement will terminate automatically upon a termination of the
Merger Agreement prior to the Effective Time of the Merger.

                                          Sincerely,

                                          The 1818 Fund III, L.P.
                                          a Delaware limited partnership

                                          By: Brown Brothers Harriman & Co.
                                          Its General Partner

                                                /s/ (signature illegible)
                                          By:________________________________

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