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                                  June 16, 2000



Mr. Edward Kuehnle
17 Devonshire Land
Mendham, NJ 07945


Dear Ed:

         In connection with your relocation to Chicago, I confirm that we have
agreed that IRI will provide you with the following:

1.   We will reimburse your mortgage differential for three (3) years between
     your current mortgage and your new mortgage on a home of comparable size to
     your current home. If you refinance your mortgage, this differential will
     decrease. The reimbursement will be grossed up for taxes. Your relocation
     will also be grossed up for taxes in accordance with IRI's standard
     relocation policy. You will be reimbursed each year on the anniversary of
     your move to Chicago and you will need to submit the appropriate
     documentation.

2.   If your employment with IRI is terminated by IRI without cause, your
     responsibilities are significantly reduced without cause or you cease to
     report directly to the Chief Executive Officer of IRI without cause (in any
     case other than in the event of a change in control) prior to the first
     anniversary of the date of your relocation to Chicago (the "First Post-Move
     Year"), you will be entitled to receive as severance benefits under the
     terms of your employment agreement: (a) severance pay equal to 140% of your
     base salary (reflecting base salary and bonus) for the next twenty-four
     months, paid over the term of this severance period; and (b) continuation
     of benefits in accordance with IRI's standard severance policy for the
     severance period. You will not be entitled to receive a separate bonus for
     the year in which your employment with IRI terminates as your severance
     amount is calculated to include your target bonus amount for the year of
     termination. These severance benefits shall be in lieu of, and not in
     addition to, those severance benefits specified in Paragraph 2 on Page 2 of
     your employment letter.

3.   If your employment with IRI is terminated by IRI without cause, your
     responsibilities are significantly reduced without cause or you cease to
     report directly to the Chief Executive Officer of IRI without cause (in any
     case other than in the event of a change in control) between the first and
     second anniversaries of the date of your relocation to Chicago (the "Second
     Post-Move Year"), you will be entitled to receive as severance benefits
     under the terms of your employment agreement: (a) severance pay equal to
     140% of your base salary (reflecting base salary and bonus) for the number
     of months equal to 24 months less one month for each month or portion of a
     month during the Second Post-Move Year that occurred prior to the effective
     date of employment termination or reduction of responsibilities, such
     severance pay to be paid over the term of this severance period; and (b)
     continuation of benefits in accordance with IRI's standard severance policy
     for the severance period. You will not be entitled to receive a separate
     bonus for the year in which your employment with IRI terminates as your
     severance amount is calculated to include your target bonus amount for the
     year of termination. These severance benefits shall be in lieu of, and not
     in addition to, those severance benefits specified in Paragraph 2 on Page 2
     of your employment letter.


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4.   If your employment is terminated under Paragraphs 2 or 3 above, any stock
     options that would otherwise vest in the succeeding 18 month period
     following such termination will vest immediately and shall be exercisable
     in accordance with the terms of the applicable stock option plan under
     which they were granted.

5.   If, after your relocation to Chicago, your employment with IRI is
     terminated by IRI without cause, your responsibilities are significantly
     reduced without cause or you cease to report directly to the Chief
     Executive Officer without cause (in any case other than in the event of a
     change in control), IRI will reimburse you for your relocation to another
     location in the U.S. in accordance with IRI's standard relocation policy.
     Such relocation must take place within one year after your employment with
     IRI terminates. The relocation expense will be capped at $100,000 and will
     not be grossed up. IRI will provide reimbursement upon presentment of
     appropriate documentation.

6.   We will allow you to defer receipt of your severance pay and relocation
     reimbursement payment into the calendar year following the effective date
     of your termination of employment if you choose to do so for tax reasons.

7.   We will reimburse you up to $1,500 for tax preparation for your 2000 tax
     return upon presentment of appropriate documentation. This amount will not
     be grossed up.

Finally, regarding your request for modified change in control language, we are
in the process of implementing agreements for all executive officers including
you which will contain uniform change in control language. Once finalized and
executed by you, this agreement will take the place of any change in control
language currently included in your employment agreement. A form agreement will
be provided to you within the next few weeks.

                             Sincerely,




                             Gary S. Newman
                             Executive Vice President, Human Resources


cc:  Joe Durrett