**Exhibit 31.1**
CERTIFICATION UNDER EXCHANGE ACT RULE 13A-14 AND 15D-14
I, Melvyn E. Bergstein, certify that:
1. I have reviewed this annual report on Form 10-K of DiamondClusterInternational, Inc; 2. Based on my knowledge, this annual report does not contain any untruestatement of a material fact or omit to state a material fact necessary tomake the statements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period covered bythis annual report; 3. Based on my knowledge, the financial statements, and other financialinformation included in this annual report, fairly present in all materialrespects the financial condition, results of operations and cash flows ofthe registrant as of, and for, the periods presented in this annualreport; 4. The registrant’s other certifying officers and I are responsible forestablishing and maintaining disclosure controls and procedures (asdefined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internalcontrol over financial reporting (as defined in Exchange Act Rules13-15(f) and 15d-15(f)) for the registrant and we have:
 a) Designed such disclosure controls and procedures to ensure that materialinformation relating to the registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities,particularly during the period in which this annual report is beingprepared;  b) Designed such internal control over financial reporting, or caused suchinternal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability offinancial reporting and the preparation of financial statements forexternal purposes in accordance with generally accepted accountingprinciples;  c) Evaluated the effectiveness of the registrant’s disclosurecontrols and procedures and presented in this report our conclusions aboutthe effectiveness of the disclosure controls and procedures, as of the endof the period covered by this report based on such evaluation; and  d) Disclosed in this report any change in the registrant’s internal controlover financial reporting that occurred during the registrant’s most recentfiscal quarter (the registrant’s fourth fiscal quarter in the case of anannual report) that has materially affected, or is reasonably likely tomaterially affect, the registrant’s internal control over financialreporting.
5. The registrant’s other certifying officers and I have disclosed, basedon our most recent evaluation of internal control over financialreporting, to the registrant’s auditors and the audit committee ofregistrant’s board of directors (or persons performing the equivalentfunctions):
 a) All significant deficiencies and material weaknesses in the design oroperation of internal controls over financial reporting which arereasonably likely to adversely affect the registrant’s ability to record,process, summarize and report financial information; and  b) Any fraud, whether or not material, that involves management or otheremployees who have a significant role in the registrant’s internalcontrols over financial reporting.
Date: June 7, 2004
/s/ Melvyn E. BergsteinBy: Melvyn E. BergsteinIts: Chairman and Chief Executive Officer
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