April 16, 2007

BY E-MAIL TO: rule-comments@sec.gov

Nancy M. Morris
Securities and Exchange Commission
100 F Street, NE
Washington, D.C. 20549-1090

Re: File No. SR-NASD-2007-023; Proposed Rule Change to Amend the By-Laws of NASD to Implement Governance and Related Changes to Accommodate the Consolidation of the Member Firm Regulatory Functions of NASD and NYSE Regulation, Inc.

Dear Ms. Morris:

As a member of the Securities Industry and Financial Markets Association, Centennial Securities Company LLC strongly supports the consolidation of MYSE Member Regulation and NASD, and wholeheartedly concurs with the comment letter filed by the SIFMA. I urge the Commission to approve the bylaw changes promptly, so the consolidation will be completed within the time frames already announced by NASD and NYSE.


William C. Alsover