Quadrant 4 System (QFOR) 10-K 2007 FY Annual report

Exhibit 32.1

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 Aventura Holdings, Inc. (the “Company”) on Form 10-K for the year ending December 31, 2007 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Craig A. Waltzer, Chief Executive Officer and Chief Financial Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(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 results of operations of the Company.

March 28, 2008	By:	/s/ Craig A. Waltzer
		Craig A. Waltzer
		Chief Executive Officer, President and Director

End of Filing