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EXHIBIT 99.4

CERTIFICATION UNDER EXCHANGE ACT RULE 13A-14 AND 15D-14

I, William R. McClayton, certify that:



| | 1. |  | I have reviewed this annual report on Form 10-K of DiamondCluster
International, Inc;                                                                                                                                                                                                                                   
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|
| | 2. |  | Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to
make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by
this annual report;
|
| | 3. |  | Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of
the registrant as of, and for, the periods presented in this annual
report;                   
|
| | 4. |  | The registrants other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we
have:                                                                                               
|

| | a) |  | designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this annual report is
being prepared;
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|
| | b) |  | evaluated the effectiveness of the registrants disclosure controls
and procedures as of a date within 90 days prior to the filing date of
this annual report (the Evaluation Date); and                                                                                                  
|
| | c) |  | presented in this annual report our conclusions about the
effectiveness of the disclosure controls and procedures based on our
evaluation as of the Evaluation Date;                                                                                                                        
|

| | 5. |  | The registrants other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrants auditors and the
audit committee of registrants board of directors (or persons performing
the equivalent function):
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|

| | a) |  | all significant deficiencies in the design or operation of internal
controls which could adversely affect the registrants ability to record,
process, summarize and report financial data and have identified for the
registrants auditors any material weaknesses in internal controls; and
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|
| | b) |  | any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrants internal
controls; and                                                                                                                                        
|

| | 6. |  | The registrants other certifying officers and I have indicated in this
annual report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal
controls subsequent to the date of our most recent evaluation, including
any corrective actions with regard to significant deficiencies and
material weaknesses.
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Date: June 23, 2003

/s/ William R. McClayton
By: William R McClayton
Its: Senior Vice President, Finance and Administration





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Exhibit 99.4

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of DiamondCluster International, Inc. (the
Company) on Form 10-K for the period ending March 31, 2003 as filed with the
Securities and Exchange Commission on the date hereof (the Report), I,
William R. McClayton, Senior Vice President of Finance and Administration of
the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to §
906 of the Sarbanes-Oxley Act of 2002, that:

(1)  The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

(2)  The information contained in the Report fairly presents, in all
material respects, the financial condition and result of operations of the
Company.

/s/ William R. McClayton

William R. McClayton
Senior Vice President, Finance and Administration
June 23, 2003