[TMNG Letterhead]



CONFIDENTIAL TREATMENT REQUESTED





VIA EDGAR

September 21, 2007

Mr. Kevin Woody
Accounting Branch Chief
Room 4561
Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549

     Re:  The Management Network Group, Inc.
          Form 10-K for the fiscal year ended December 30, 2006
          File No. 000-27617

Dear Mr. Woody:

     The Management  Network Group, Inc. ("TMNG" or the "Company") is pleased to
provide the following response to your comment letter dated September 4, 2007 to
Donald E.  Klumb,  Vice  President  and Chief  Financial  Officer of TMNG,  with
respect to the above-referenced report.

     For your  convenience,  our  response  to your  comment is  preceded by the
comment to which it relates.

Form 10-K for the year ended December 30, 2006
- ----------------------------------------------

Item 8.  Financial Statements and Supplementary Data
- ----------------------------------------------------

20.      Subsequent Event, page 75
- ----------------------------------

1.   We noted your response to prior  comment 1. Please  explain to us in detail
     how the contingent  consideration  is calculated and how you determined the
     amount that was unlikely to be paid. Furthermore,  please explain to us why
     you have not included the $0.5 million of transaction  costs as part of the
     purchase price in your investment test.

     RESPONSE:

     For purposes of determining the amount of contingent consideration included
     in the Investment Test  calculation,  we followed the guidance of the SEC's
     Staff Training Manual (Topic Two,





     I.D.1.a) which states the  investment  test should  "...include  contingent
     consideration  as part of the total  investment in the acquiree  unless the
     likelihood of its payment is remote."

     Deal Structure
     --------------

     The Cartesian  transaction  involved  three major  components of contingent
     consideration:

     1.   Up to $1.30  million  - Working  Capital  Holdback  and  Stock  Option
          participant payments
     2.   Up to $1.96 million - Earn-out  payments tied to achieving revenue and
          EBITDA targets  during the eight months  following  acquisition  which
          exceed $[***] million and $[***] million, respectively
     3.   Up to $5.88 million - Earn-out  shared with seller,  calculated as 35%
          of annual EBITDA of Cartesian  (the "EBITDA  Earn-out") for up to four
          years.  The  annual  amount  of  EBITDA  Earn-out  is  capped at $1.96
          million, enabling the seller to earn the maximum within three years.

     The first two  categories of contingent  consideration  were  determined to
     have a greater than remote  likelihood  of being paid and were  included in
     the Investment Test in their entirety.  This determination was based on the
     short-term  nature of these two components of contingent  consideration and
     our view of the  short-term  operating  results  that  would  affect  these
     contingencies.

     The  EBITDA  Earn-out  category  of  contingent  consideration  is based on
     operating results (i.e., EBITDA) over a four year time period. We based our
     assessment of probability  of payout on the  quantitative  and  qualitative
     data utilized to value the business during acquisition negotiations.

     Background of the Transaction Structure and Negotiations
     --------------------------------------------------------

     We first reached  tentative  agreement with the Cartesian  founders in July
     2006 in the form of a  non-binding  letter of intent  ("LOI")  to  purchase
     Cartesian  for $[***]  million (of which $[***]  million was not subject to
     contingency and $[***] million was contingent consideration).  At that time
     Cartesian projected modest improvements in operating results for its fiscal
     year 2007 and beyond.

     Subsequent to the initial negotiations, Cartesian began to realize benefits
     from  consulting  engagements  to  support  [***]  activity  for  its  most
     significant client, [***],  resulting in a substantial increase in activity
     in the early part of Cartesian's fiscal year ended July 31, 2007.  Although
     the [***] projects were short-term, the increased revenue and profitability
     from these  projects  led the sellers to request an increase in deal price.
     After a second round of negotiations,  we signed a definitive  agreement on
     December 22, 2006 to purchase Cartesian for $15.6 million, a $[***] million
     increase from the original LOI, of which almost all ($[***] million) was an
     increase in contingent consideration,  now representing $9.1 million or 58%
     of the total purchase price.

     Our decision to structure a majority of the  purchase  price as  contingent
     consideration  reflected our view that  Cartesian's  recent  improvement in
     financial  results  was short lived and could not be  sustained  over time.
     While we were  enthusiastic  about the recent  success that  Cartesian  was
     experiencing, we did not believe the type of increase in purchase price the
     sellers sought was




     appropriate  without  structuring  a  significant  portion of the increased
     purchase  price  as  contingent.   Furthermore,  we  believe  the  sellers'
     agreement  to  structure  the  deal  in  this  fashion  demonstrates  their
     inability to prove this success was sustainable.

     Basis for Exclusion of a Portion of EBITDA Earn-out  Category of Contingent
     ---------------------------------------------------------------------------
     Consideration from Investment Test
     ----------------------------------

     Our  conclusion  regarding  the  component  of EBITDA  Earn-out  contingent
     consideration  viewed as remote and excluded from the  Investment  Test was
     based on careful consideration of:

     o    Cartesian's historical financial performance
     o    Client concentration
     o    Volatility of professional services businesses

     Cartesian's Historical Financial Performance
     --------------------------------------------

     Over the four year period prior to the  acquisition  Cartesian  experienced
     modest revenue growth and relatively consistent EBITDA margins:

                                                USD in Thousands
                                       -------------------------------------
                                       FY 2003   FY 2004   FY 2005   FY 2006
                                       -------   -------   -------   -------
        Revenue                         [***]     {***]     [***]     [***]
        EBITDA                          [***]     {***]     [***]     [***]
        EBITDA as % of Revenue          [***]     {***]     [***]     [***]

     As a point of reference,  Cartesian would need to achieve cumulative EBITDA
     of  $[***]  million  over a four  year  period  to earn the full  amount of
     contingent  consideration.  This  would  represent  an  increase  of $[***]
                                 -----------------------------------------------
     million,  or  [***]%,  when  compared  with the  cumulative  EBITDA for the
     ---------------------------------------------------------------------------
     previous four year period.
     --------------------------

     Client Concentration
     --------------------

     Since it's  founding,  Cartesian has had a high  concentration  of revenues
     from a single customer,  [***] and its  predecessors.  In fiscal year 2006,
     [***] was formed through the merger of two significant  Cartesian  clients,
     [***] and [***]. As shown below, revenues from the combined [***] have been
     fairly consistent at approximately  $[***] million  annually,  representing
     between [***]% and [***]% of Cartesian's total revenues over the prior four
     years:


                                                USD in Thousands
                                       -------------------------------------
                                       FY 2003   FY 2004   FY 2005   FY 2006
                                       -------   -------   -------   -------
        Total Revenue                   [***]     {***]     [***]     [***]
        [***] Revenue                   [***]     {***]     [***]     [***]
        % of Total Revenue              [***]     {***]     [***]     [***]


     While  Cartesian's  revenues  for the fiscal  year ended July 31, 2006 were
     $[***] million,  Cartesian's  support of [***] activities drove an increase
     in revenue during the first quarter of




     Cartesian's  fiscal  year  2007  (August  through  October  2006) to $[***]
     million. It is important to note (and as shown in the chart below) that all
                                                                             ---
     of Q1 2007 growth (the last  quarter  before the  transaction  closed) came
     from [***]  activity,  with the  remaining  portfolio  of revenue  actually
     shrinking slightly.

                                                USD in Thousands
                                       -------------------------------------
                                         4Q       Qtr. over Qtr.      1Q
                                       FY 2006       Change         FY 2007
                                       -------    --------------    -------
        [***] Revenue                   [***]         [***]           [***]
        All Other Revenue               [***]         [***]           [***]
                                       -------------------------------------
        Total Revenue                   [***]         [***]           [***]
                                       =====================================
        % of Total Revenue              [***]         [***]           [***]

     As discussed above, this increase in revenues during the quarter leading up
     to the  transaction  drove the  sellers to  revisit  the terms of the deal.
     While there was tremendous growth in the first quarter of fiscal year 2007,
     the [***] work that drove the  majority of the  increase  had a finite life
     and was not  reasonably  expected  to be  sustained  beyond  the first year
     following  the  acquisition.   As  of  the  acquisition  date,  Cartesian's
     remaining   undelivered  contracts  related  to  this  [***]  work  totaled
     approximately  $[***] million and had durations of less than one year based
     on the client's  [***]  schedule.  At the same time, the remaining sold but
     undelivered  "backlog"  of  contracts  with  other  customers  approximated
     Cartesian's  historical levels. While we believed revenue and profitability
     for the first year following the acquisition would be substantially  higher
     than  what  Cartesian  had  produced  in the  previous  fiscal  years,  the
     concentration of this success in one client  initiative with a limited life
     did not support a business case in which revenue and profitability would be
     maintained at these levels beyond the first year.

     Volatility of Professional Services Business
     --------------------------------------------

     Cartesian  is a  professional  services  firm  focused  on the same  market
     segments as TMNG.  Our  experience in the  professional  services  industry
     makes  us  acutely  aware  of  the  volatility  that  can  be  experienced.
     Consulting  is a volatile  business  comprised  of  short-term  cancellable
     projects  where  current  success is not  necessarily  indicative of future
     results. As discussed above, we appropriately challenged the sustainability
     of the  success  Cartesian  experienced  in the  quarter  leading up to the
     transaction.  Our perception  about the  sustainability  of these increased
     revenue  and  EBITDA  levels  stemmed  from the fact that  those  successes
     occurred  over a period of only one quarter  and were  highly  concentrated
     with a single customer whose [***]  activities  drove a need for additional
     consultants.  The prior ten year  history of  Cartesian  did not  support a
     valuation  based on one  quarter  of  success,  especially  given  the fact
     pattern outlined above.

     Transaction Costs
     -----------------

     We have reviewed the SEC's Staff  Training  Manual (Topic Two,  I.D.1a) and
     believe the $0.5M of transaction costs should have been included as part of
     the purchase price in our Investment Test. Additionally, as we reviewed the
     Investment Test  calculation  provided in our previous letter we discovered
     we had used the  exchange  rate at March 31, 2007 rather than the  exchange
     rate on the  transaction  date of January 2, 2007 to convert British pounds
     to  US  dollars.  In  an  attempt  to  reconcile  the  calculation  to  the
     disclosures made in our first quarter Form 10-Q, we inadvertently  used the
     exchange rate from the end of our first quarter.  We have corrected both of




     these items. The Investment Test which follows  incorporates these changes,
     and reflects the amount of EBITDA  Earn-out that would be required in order
     for the purchase price to equal 20% of TMNG's total assets:




                                                                                    

                                                                                  GBP             $(1)
                                                                             -------------   -------------

     TMNG Total Assets
        Total Assets at December 31, 2005                                                      73,549,000
                                                                                             =============
     Purchase Price Required to Meet 20% Test
        Non-Contigent Investment in Cartesian
          Consideration paid to sellers                                         3,291,000       6,447,398
          Transaction costs                                                       270,794         530,513
                                                                             -------------   -------------
                                                                                3,561,794       6,997,911
                                                                             -------------   -------------

     Contingent Investment in Cartesian
        100% of Category 1 and 2 Contigent Consideration                        1,664,000       3,259,942
        EBITDA Earn-out Required to Meet 20% Test (see calculation below)         [***]           [***]
                                                                             -------------   -------------
                                                                                  [***]           [***]
                                                                             -------------   -------------

     Purchase Price Required to Meet 20% Test                                     [***]           [***]
                                                                             =============   =============





- ----------------------
(1)  Conversion  from GBP to USD was based on the  exchange  rate for January 2,
     2007





     As discussed above in the Investment Test, the following table compares the
     cumulative  four year EBITDA levels  required to meet the 20% threshold for
     the Investment  Test to the cumulative  four years of EBITDA  preceding the
     transaction  date. For the  qualitative  reasons  outlined  above,  further
     supported  quantitatively  below (i.e., EBITDA would have to improve by the
     more than [***]%), we believe it is remote the purchase price for Cartesian
     could reach significance as defined under the Investment Test.



                                                                                    

                                                                                  GBP               $
                                                                             -------------   -------------

     Calculation of EBITDA Earn-Out Required to Meet 20% Test
        Cumulative EBITDA for Years 1 through 4                                   [***]           [***]
                                                                                      35%             35%
                                                                             -------------   -------------
        Earnout based on EBITDA                                                   [***]           [***]
                                                                             -------------   -------------


     Previous Four Year Cumulative EBITDA                                         [***]           [***]
     Increase in Four Year Cumulative EBITDA                                      [***]           [***]
     % Increase                                                                   [***]           [***]



     Conclusion
     ----------

     Cartesian  has operated  over the past three years with  average  EBITDA of
     $[***] million per year, with no individual year exceeding  $[***] million.
     Over the next four years,  Cartesian would need to average EBITDA of $[***]
     million per year for the Cartesian  purchase  price to exceed 20% of TMNG's
     total  assets.  The  transaction  was  structured   providing  an  earn-out
     opportunity because of recent  improvements in operating results.  However,
     those results were almost all tied to one client's [***]  activities  which
     are not sustainable  beyond one year.  Given the fact pattern  discussed in
     this letter,  including  past  performance  of Cartesian,  the risk factors
     discussed above, the client concentration and the amount of EBITDA required
     to meet the 20% test being remote,  we concluded that this transaction does
     not meet the significance tests.


     We appreciate the  opportunity  to provide this  response.  If you have any
questions  or  would  like  to  discuss  these  responses,  please  call  me  at
913.345.9315.

                                      Very truly yours,



                                      /s/ Donald E. Klumb
                                     -------------------------------------------
                                      Donald E. Klumb
                                      Vice President and Chief Financial Officer



cc:  Thurston Cromwell, Esq.