This excerpt taken from the NGSX 10-K filed Mar 26, 2009.
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of NeurogesX, Inc. on Form 10-K for the year ended December 31, 2008 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-K fairly presents in all material respects the financial condition and results of operations of NeurogesX, Inc.
Dated: March 26, 2009