Exhibit 32.2

CERTIFICATE OF THE PRINCIPAL FINANCIAL OFFICER
OF DIOMED HOLDINGS, INC. (REGISTRANT)
PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

          I, David B. Swank, Chief Financial Officer of the Registrant,  certify
to the best of my knowledge and belief pursuant to Section 906 of Sarbanes-Oxley
Act of 2002 (18 U.S.C. Section 1350) that:

         (3)       The  Quarterly  Report on Form  10-QSB for the  period  ended
                   September 30, 2003, which this statement  accompanies,  fully
                   complies with the  requirements  of section 13(a) or 15(d) of
                   the Securities Exchange Act of 1934; and

         (4)       The  information  contained in the  Quarterly  Report on Form
                   10-QSB  fairly  presents,  in  all  material  respects,   the
                   financial   condition   and  result  of   operations  of  the
                   Registrant.


Date:  November 7, 2003                 /s/ DAVID B. SWANK
                                        ---------------------------------
                                        David B. Swank
                                        Chief Financial Officer
                                        (Principal Financial Officer)