|      1. I have reviewed this annual report on Form 10-K, and all reports onForm 8-K containing distribution or servicing reports filed in respect ofperiods included in the year covered by this annual report, of Merrill LynchDepositor, Inc., on behalf of PreferredPLUS Trust Series QWS-1;     2. Based on my knowledge, the information in these reports, taken as awhole, does not contain any untrue statement of a material fact or omit to statea material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading as of thelast day of the period covered by this annual report;     3. Based on my knowledge, the distribution or servicing informationrequired to be provided to the depositor by the trustee under the pooling andservicing, or similar, agreement, for inclusion in these reports is included inthese reports;     4. I am responsible for reviewing the activities performed by thedepositor and the trustee under the pooling and servicing, or similar, agreementand based upon my knowledge and the annual compliance review required under thatagreement, and except as disclosed in the reports, the depositor and trusteehave each fulfilled its obligations under that agreement; and     5. The reports disclose all significant deficiencies relating to thecompliance by the depositor or trustee with the minimum servicing or similarstandards based upon the report provided by an independent public accountant,after conducting a review in compliance with the Uniform Single AttestationProgram for Mortgage Bankers or similar procedure, as set forth in the poolingor servicing, or similar, agreement, that is included in these reports.In giving the certifications above, I have reasonably relied on informationprovided to me by the following unaffiliated parties: The Bank of New York Mellon andits officers and agents. |
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