CERTIFICATE OF AMENDMENT OF
                         CERTIFICATE OF INCORPORATION

NTECH, CORPORATION, a corporation organized and existing under and by virtue of
the General Corporation Law of the State of Delaware,

DOES HEREBY CERTIFY:

FIRST:  That at a meeting of the Board of Directors of NTECH, CORPORATION,
resolutions were duly adopted setting forth a proposed amendment of the
Certificate of Incorporation of said corporation, declaring said amendment to
be advisable and calling a meeting of the stockholders of said corporation for
consideration thereof.  The resolution setting forth the proposed amendment is
as follows:

       RESOLVED, that the Certificate of Incorporation of this corporation be
amended by changing the Articles thereof numbered "first" so that, as amended,
said Article shall be and read as follows:

THE NAME OF THE CORPORATION IS: MOLECULAR ROBOTICS, INC.

SECOND:  That thereafter, pursuant to resolution of its Board of Directors, a
special meeting of the stockholders of said corporation was duly called and
held, upon notice in accordance with Section 222 of the General Corporation Law
of the State of Delaware at which meeting the necessary number of shares as
required by statute were voted in favor of the amendment.

THIRD:  That said amendment was duly adopted in accordance with the provisions
of Section 242 of the General Corporation Law of the State of Delaware.

FOURTH:  That the capital of said corporation shall not be reduced under or by
reason of said amendment.

IN WITNESS WHEREOF, NTECH CORPORATION has caused this certificate to be signed
by Thomas McCarthy its President, and Susan Brana its Secretary, this 23 day of
March 2000.

By: /s/ THOMAS MCCARTHY
Thomas McCarthy
President

Attest: /s/ SUSAN BRANA
Susan Brana
Secretary