UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                    FORM 8-K

                                 CURRENT REPORT
                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

Date of report (Date of earliest event reported): November 6, 2006

                  Dean Witter Diversified Futures Fund II L.P.
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             (Exact Name of Registrant as Specified in Its Charter)

        Delaware                       0-17446                      13-3490286
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(State or Other                     (Commission File           (IRS Employer
Jurisdiction of Incorporation)           Number)             Identification No.)


c/o Demeter Management Corporation,
330 Madison Avenue, 8th Floor, New York, NY                            10017
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 (Address of Principal Executive Offices)                          (Zip Code)

Registrant's telephone number, including area code: (212) 905-2700


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          (Former Name or Former Address, if Changed Since Last Report)

    Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

    | | Written communications pursuant to Rule 425 under the Securities Act (17
CFR 230.425)

    | | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
CFR 240.14a-12)

    | | Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

    | | Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))



    Item 5.02. Departure of Directors or Principal Officers; Election of
Directors; Appointment of Principal Officers; Compensatory Arrangements of
Certain Officers.

    (b) Effective November 6, 2006, Kevin Perry will no longer serve as Chief
Financial Officer of Demeter Management Corporation, the general partner of the
registrant (the "General Partner").

    (c) Effective November 6, 2006, Lee Horwitz will serve as Chief Financial
Officer of the General Partner, and will be a principal of the General Partner,
subject to approval by and registration with the National Futures Association.

    Lee Horwitz, age 55, currently serves as an Executive Director and
Controller within the Global Wealth Management Group at Morgan Stanley. Mr.
Horwitz joined Morgan Stanley in March 1984 and has held a variety of positions
throughout Morgan Stanley's organization during his tenure. Mr. Horwitz received
a B.A. degree from Queens College and an MBA from Rutgers University. Mr.
Horwitz is a Certified Public Accountant.



                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                    DEAN WITTER DIVERSIFIED FUTURES FUND II L.P.

Date: November 9, 2006              By: Demeter Management Corporation
                                        as General Partner


                                       /s/ Walter Davis
                                    ---------------------------------------
                                    Name:  Walter Davis
                                    Title: President