1

                    SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    Form 10-Q
 (Mark One)

 X  QUARTERLY  REPORT  PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE
- --- ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1999 OR

    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
- --- ACT OF 1934 FOR THE TRANSITION PERIOD FROM _____________ TO _____________

Commission file  number  0-21796
                           CDW Computer Centers, Inc.
             (Exact name of registrant as specified in its charter)

                    Illinois                             36-3310735
      (State or other jurisdiction of                 (I.R.S. Employer
       incorporation or organization)                Identification No.)

        200 N. Milwaukee Ave.                               60061
       Vernon Hills, Illinois                             (Zip Code)
(Address of principal executive offices)

                                 (847) 465-6000
              (Registrant's telephone number, including area code)


- --------------------------------------------------------------------------------
   (Former name, former address and former fiscal year, if changed since last
                                    report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

Yes      X                                                    No
     ----------                                                   ----------
Applicable  only to  issuers  involved  in  bankruptcy  proceedings  during  the
preceding five years:

Indicate  by check mark  whether  the  registrant  has filed all  documents  and
reports  required  to be filed by  Sections  12,  13 or 15(d) of the  Securities
Exchange Act of 1934 subsequent to the  distribution of securities  under a plan
confirmed by a court.

Yes                                                           No
     ----------                                                   ----------

Applicable only to corporate issuers:
Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest  practicable date.


As of August 12, 1999, 43,246,672  common shares were issued and 43,146,672 were
outstanding.



 2



                           CDW COMPUTER CENTERS, INC.

                                TABLE OF CONTENTS

                                                                       Page No.
                                                                     -----------

PART I.      Financial Information

    Item 1.    Financial Statements (unaudited):

               Condensed Consolidated Balance Sheets -
               June 30, 1999 and  December 31, 1998                       1

               Condensed Consolidated Statements of Income -
               Three and six months ended  June 30, 1999 and 1998         2

               Condensed Consolidated Statement of Shareholders' Equity -
               Six months ended June 30, 1999                             3

               Condensed Consolidated Statements of Cash Flows -
               Six months ended June 30, 1999 and 1998                    4

               Notes to Condensed Consolidated Financial Statements     5 - 8


    Item 2.    Management's Discussion and Analysis of
               Financial Condition and Results of Operations            9 - 16


PART II.     Other Information

    Item 1.    Legal Proceedings                                          17
    Item 4.    Submission of Matters to a Vote of Security Holders        17
    Item 6.    Exhibits and Reports on Form 8-K                        17 - 18

               Signatures                                                 19


3
ITEM I. FINANCIAL STATEMENTS

                  CDW COMPUTER CENTERS, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                                 (in thousands)
                                   (unaudited)





                                                                June 30,              December 31,
                                                                  1999                    1998
                                                              -------------           ------------
ASSETS
                                                                                 
Current assets:
      Cash and cash equivalents                                 $  25,573              $   4,230
      Marketable securities                                        52,130                 66,458
      Accounts receivable, net of allowance for doubtful
        accounts of $4,000 and $3,185, respectively               213,328                152,308
      Miscellaneous receivables                                     8,031                  5,896
      Merchandise inventory                                        81,064                 64,392
      Prepaid expenses and other assets                             1,014                  1,423
      Deferred income taxes                                         5,081                  5,081
                                                                ---------              ---------

         Total current assets                                     386,221                299,788

Property and equipment, net                                        38,719                 37,056
Deferred income taxes and other assets                              5,575                  4,977
                                                                ---------              ---------

          TOTAL ASSETS                                          $ 430,515              $ 341,821
                                                                =========              =========

LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
      Accounts payable                                          $  78,440              $  41,358
      Accrued expenses:
         Compensation                                              19,092                 16,279
         Income taxes                                               5,063                  5,146
         Exit costs                                                 2,547                  2,715
         Other                                                      6,509                  5,560
                                                                ---------              ---------

          Total current liabilities                               111,651                 71,058
                                                                ---------              ---------

Commitments and contingencies

Shareholders' equity:

      Preferred shares, $1.00 par value; 5,000 shares
         authorized; none issued                                        -                      -
      Common shares, $ .01 par value; 75,000 shares
         authorized; 43,239 and 43,142 shares issued
         respectively                                                 216                    216
      Paid-in capital                                              87,158                 81,352
      Retained earnings                                           234,258                192,259
      Unearned compensation                                          (679)                  (975)
                                                                ---------              ---------
         Total shareholders' equity                               320,953                272,852
                                                                ---------              ---------
      Less cost of common shares in treasury, 50 shares            (2,089)                (2,089)
                                                                ---------              ---------
         Total shareholders' equity                               318,864                270,763
                                                                ---------              ---------

          TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY            $ 430,515              $ 341,821
                                                                =========              =========


     The accompanying notes are an integral part of the consolidated financial
     statements

                                       1


 4

                   CDW COMPUTER CENTERS, INC. AND SUBSIDIARIES
                        CONSOLIDATED STATEMENTS OF INCOME
                      (in thousands, except per share data)
                                   (unaudited)



                                                         Three Months Ended            Six Months Ended
                                                              June 30,                      June 30,
                                                   ----------------------------- ----------------------------
                                                        1999           1998          1999             1998
                                                   -------------   ------------- -------------    -------------
                                                                                       
 Net sales                                           $ 597,554       $ 408,945    $1,136,960       $  793,536
 Cost of sales                                         522,807         357,238       994,307          692,682
                                                     ---------       ---------    ----------       ----------

 Gross profit                                           74,747          51,707       142,653          100,854

 Selling and administrative expenses                    38,679          26,851        74,900           52,643
                                                      ---------      ---------    ----------       ----------

 Income from operations                                 36,068          24,856        67,753           48,211

 Interest income                                           961           1,042         2,003            2,211
 Other expense                                            (108)            (91)         (221)            (162)
                                                     ---------       ---------    ----------       ----------

 Income before income taxes                             36,921          25,807        69,535           50,260

 Income tax provision                                   14,620          10,219        27,536           19,902
                                                     ---------       ---------    ----------       ----------

 Net income                                          $  22,301       $  15,588    $   41,999       $   30,358
                                                     =========       =========    ==========       ==========

 Earnings per share
    Basic                                            $    0.52       $     .36    $      .97       $      .70
                                                     =========       =========    ==========       ==========
    Diluted                                          $    0.51       $     .36    $      .96       $      .70
                                                     =========       =========    ==========       ==========

 Weighted average number of
 common shares outstanding
    Basic                                               43,118          43,092        43,094           43,092
                                                     =========       =========    ==========       ==========
    Diluted                                             43,925          43,364        43,904           43,436
                                                     =========       =========    ==========       ==========


     The accompanying notes are an integral part of the consolidated financial
     statements

                                       2

 5

                   CDW COMPUTER CENTERS, INC. AND SUBSIDIARIES
            CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY
                                 (in thousands)
                                  (unaudited)




                                                                                                                           Total
                                             Common Shares     Paid in    Retained      Unearned    Treasury Shares    Shareholders'
                                             Shares  Amount    Capital    Earnings    Compensation  Shares   Amount        Equity
                                             --------------------------------------------------------------------------------------
                                                                                               
BALANCE AT DECEMBER 31, 1998                 43,142  $  216   $  81,352   $ 192,259   $    (975)       100   $(2,089)  $  270,763

MPK Restricted Stock Plan forfeitures                               (44)                     44                                 -

Amortization of unearned compensation                                                       252                               252

Exercise of Stock Options                        97               1,218                                                     1,218

Tax Benefit from stock option transactions                        4,632                                                     4,632

Net income                                                                   41,999                                        41,999
                                             --------------------------------------------------------------------------------------
BALANCE AT JUNE 30, 1999                     43,239  $  216   $  87,158   $ 234,258   $    (679)      100    $(2,089)  $  318,864
                                             ======================================================================================




    The accompanying notes are an integral part of the consolidated financial
    statements

                                       3

 6


                  CDW COMPUTER CENTERS, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (unaudited)




                                                                                  Six Months Ended June 30,
                                                                               -------------------------------
                                                                                 1999                   1998
                                                                               --------               --------
                                                                                                
Cash flows from operating activities:

Net income                                                                     $ 41,999                $ 30,358

Adjustments  to reconcile net income to net cash provided by operating
activities:

        Depreciation                                                              3,200                   2,179
        Accretion of marketable securities, net                                  (1,382)                 (1,354)
        Allowance for doubtful accounts                                             815                     525
        Stock-based compensation expense                                            252                     237
        Legal fees assumed by majority shareholder, net of tax                        -                     281
        Deferred income taxes                                                       112                       -
        Tax benefit from stock option exercises                                   4,632                     359


        Changes in assets and liabilities:
            Accounts receivable                                                 (61,835)                (32,428)
            Miscellaneous receivables                                            (2,135)                 (1,015)
            Merchandise inventory                                               (16,672)                 12,995
            Prepaid expenses and other assets                                       403                    (136)
            Accounts payable                                                     37,082                   2,307
            Accrued compensation                                                  2,813                  (2,193)
            Accrued income taxes and other expenses                                 866                  (3,205)
            Accrued exit costs                                                     (168)                   (336)
                                                                               --------                --------

        Net cash provided by operating activities                                 9,982                   8,574
                                                                               --------                --------

Cash flows from investing activities:

        Purchases of available-for-sale securities                              (51,029)                (20,810)
        Redemptions of available-for-sale securities                             27,091                   7,250
        Purchases of held-to-maturity securities                                 (8,873)                (30,918)
        Redemptions of held-to-maturity securities                               48,431                  48,455
        Investments in and advances to subsidiary                                  (704)                      -
        Purchase of property and equipment                                       (4,863)                 (7,548)
                                                                               --------                --------

        Net cash provided by / (used in) investing activities                    10,143                  (3,571)
                                                                               --------                --------

Cash flows from financing activities:

        Proceeds from exercise of stock options                                   1,218                     440
                                                                               --------                --------

        Net cash provided by financing activities                                 1,218                     440
                                                                               --------                --------

Net increase in cash                                                             21,343                   5,443

Cash and cash equivalents - beginning of period                                   4,230                  18,233
                                                                               --------                --------

Cash and cash equivalents - end of period                                      $ 25,573                $ 23,676
                                                                               ========                ========



     The accompanying notes are an integral part of the consolidated financial
     statements

                                       4



 7

                   CDW COMPUTER CENTERS, INC. AND SUBSIDIARIES
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (unaudited)


1.  Description of Business

     CDW  Computer  Centers,   Inc.  and  its  subsidiaries   (collectively  the
"Company") are engaged in the distribution of brand name personal  computers and
related  products  primarily  through  direct  marketing to end users within the
United  States.  The  Company's  primary  business is conducted  from a combined
telemarketing,  corporate  office,  warehouse and showroom  facility  located in
Vernon Hills,  Illinois.  The Company also operates a telemarketing  facility in
Buffalo Grove, Illinois, a retail showroom in Chicago, Illinois and a government
sales office in Chantilly, Virginia.

     The  Company  extends  credit to  business,  government  and  institutional
customers under certain  circumstances  based upon the financial strength of the
customer.  Such  customers  are typically  granted net 30 day credit terms.  The
balance of the Company's  sales are made primarily  through  third-party  credit
cards and for cash-on-delivery.

2.  Summary of Significant Accounting Policies

Basis of Presentation

     The  accompanying  unaudited  financial  statements  have been  prepared in
conformity with generally accepted accounting  principles.  Such principles were
applied on a basis  consistent with those reflected in the 1998 Annual Report on
Form 10-K and documents  incorporated  therein as filed with the  Securities and
Exchange  Commission.   The  accompanying  financial  data  should  be  read  in
conjunction with the notes to consolidated financial statements contained in the
1998  Annual  Report on Form 10-K and  documents  incorporated  therein.  In the
opinion  of  management,   the  accompanying  unaudited  condensed  consolidated
financial  statements  contain  all  adjustments  (consisting  solely  of normal
recurring  accruals)  necessary to present fairly the financial  position of the
Company as of June 30, 1999 and December 31,1998,  the results of operations for
the three and six months  ended June 30,  1999 and 1998,  the cash flows for the
six months ended June 30, 1999 and 1998, and the changes in shareholders' equity
for the six months ended June 30, 1999.  The  unaudited  condensed  consolidated
statements of income for such interim periods are not necessarily  indicative of
results for the full year.

Pervasiveness of Estimates

     The  preparation  of financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect the  reported  amounts of assets and  liabilities  and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements.  Additionally,  such estimates and  assumptions  affect the reported
amounts of revenues and expenses  during the reporting  period.  Actual  results
could differ from those estimates.

Earnings Per Share

     A reconciliation  of basic and diluted earnings  per-share  computations in
accordance  with  Financial  Accounting  Standards  No. 128 "Earnings Per Share"
(SFAS 128) is included in Note 6 to the financial statements.

                                       5

 8

     On April 20,  1999,  the  Board of  Directors  of the  Company  approved  a
two-for-one  stock split to be effected in the form of a stock dividend  payable
on May 19, 1999 to all common shareholders of record at the close of business on
May 5, 1999.  All per share and related  amounts  contained  in these  financial
statements and notes have been adjusted to reflect the stock split.

3.  Marketable Securities

     The amortized cost and estimated  fair values of the Company's  investments
in marketable securities at June 30, 1999, were (in thousands):

 

                                                                                  Gross
                                                                                Unrealized
                                                                                  Holding
                                                              Estimated -------------------------   Amortized
                                                             Fair Value     Gains      (Losses)        Cost
                                                             -------------------------------------------------
                                                                                        
Security Type
Available-for-sale:
      U.S. Government and Government Agency Securities         $  26,348  $        -   $     (24)   $  26,372
                                                             -------------------------------------------------
      Total available-for-sale                                    26,348           -         (24)      26,372
                                                             -------------------------------------------------

Held to maturity:
      Bonds of states, municipalities, and political
      subdivisions                                                   151           -            -         151
      U.S. Government and Government Agency Securities            25,582           -         (25)      25,607
                                                             -------------------------------------------------
      Total held-to-maturity                                      25,733           -         (25)      25,758
                                                             -------------------------------------------------
Total marketable securities                                    $  52,081  $        -   $     (49)   $  52,130
                                                             =================================================


     The Company's  investments in securities  held-to-maturity at June 30, 1999
were all due in one year or less by contractual maturity.  Estimated fair values
of marketable securities are based on quoted market prices.

4.  Facilities & Exit Accrual

     In July 1997, the Company relocated to its current facility in Vernon Hills
and  vacated  its  Buffalo  Grove  facility.  The  Company  recorded  a  pre-tax
non-recurring charge to operating results for exit costs in the first quarter of
1996.  The exit costs consist  primarily of the estimated cost to the Company of
subleasing the vacated facility, including holding costs, the estimated costs of
restoring the building to its original  condition  and certain asset  write-offs
resulting  from the  relocation.  During the six months ended June 30, 1999, the
Company charged approximately $168,000 against the exit accrual in cash payments
for rent,  real  estate  taxes  and  maintenance  of the  facility.  During  the
comparable  period in 1998, the Company charged  approximately  $336,000 against
the exit accrual for similar costs.

     The  Company  reopened  the office  portion of the Buffalo  Grove  facility
during the fourth quarter of 1998 as a telemarketing facility.  Accordingly, the
Company records a  proportionate  share of the rent and other operating costs to
selling and  administrative  expenses.  The Company  plans to occupy the Buffalo
Grove office  facility while it finalizes  future long term growth plans for its
Vernon Hills campus.  The Company sublet the warehouse and showroom  portions of
the Buffalo Grove  facility to a third party for the period  beginning  June 15,
1999, and continuing through December 31, 2003, the end of the lease term. There
is no assurance  that the remaining  exit  liability of $2.6 million at June 30,
1999,  will be  adequate to cover  actual  costs in the event the  sublessee  is
unable or unwilling to complete the lease term.

                                       6

 9

5.  Financing Arrangements

     The Company has an  aggregate  $50  million  available  pursuant to two $25
million  unsecured  lines of credit with two financial  institutions,  one which
expires in June 2000, at which time the Company  intends to renew the line,  and
another which does not have a fixed expiration date.  Borrowings under the first
credit facility bear interest at the prime rate less 2 1/2%,  LIBOR plus 1/2% or
the federal funds rate plus 1/2%, as determined by the Company. Borrowings under
the second credit  facility  bear interest at the prime rate less 2 1/2%,  LIBOR
plus .45% or the federal funds rate plus .45%, as determined by the Company.  At
June 30, 1999, there were no borrowings against either of the credit facilities.

     The Company has entered into  security  agreements  with certain  financial
institutions  ("Flooring  Companies")  in order to  facilitate  the  purchase of
inventory  from  various  suppliers  under  certain  terms and  conditions.  The
agreements  allow for a maximum credit line of $63.9 million  collateralized  by
inventory  purchases financed by the Flooring  Companies.  At June 30, 1999, all
amounts owed the Flooring Companies are included in trade accounts payable.

 6.  Earnings Per Share

     The Company had  approximately  43,139,000  shares  outstanding at June 30,
1999.  The Company has also  granted  options to purchase  common  shares to the
directors and  coworkers of the Company under several stock option plans.  These
options have a dilutive  effect on the  calculation  of earnings per share.  The
following is a  reconciliation  of the numerators and  denominators of the basic
and diluted earnings per share computations as required by SFAS 128.


 

                                                  Three Months Ended                  Six Months Ended
                                                       June 30,                           June 30,
                                              ----------------------------       ----------------------------
                                                 1999            1998               1999            1998
                                              ------------    ------------       ------------    ------------
                                                                                        
     Basic earnings per share:
     Income available to
          common shareholders (numerator)        $ 22,301        $ 15,588           $ 41,999        $ 30,358
                                              ------------    ------------       ------------    ------------
     Weighted average common
          shares outstanding (denominator)         43,118          43,092             43,094          43,092
                                              ------------    ------------       ------------    ------------
     Basic earnings per share                    $   0.52         $  0.36           $   0.97         $  0.70
                                              ============    ============       ============    ============

     Diluted earnings per share:
     Income available to
          common shareholders (numerator)        $ 22,301        $ 15,588           $ 41,999        $ 30,358
                                              ------------    ------------       ------------    ------------
     Weighted average common
          shares outstanding                       43,118          43,092             43,094          43,092
     Effect of dilutive securities:
          Options on common stock                     807             272                810             344
                                              ------------    ------------       ------------    ------------
     Total common shares and dilutive
     securities (denominator)                      43,925          43,364             43,904          43,436
                                              ------------    ------------       ------------    ------------
     Diluted earnings per share                  $   0.51         $  0.36           $   0.96         $  0.70
                                              ============    ============       ============    ============



7.  Leasing Joint Venture

     In April 1999, CDW Capital Corporation,  a wholly-owned  subsidiary of CDW,
and  First  Portland  Corporation   ("FIRSTCORP")  formed  CDW  Leasing,  L.L.C.
("CDW-L"), a 50/50 joint venture. CDW-L provides captive leasing services to CDW
customers.  FIRSTCORP is a full-service  leasing  organization that has provided
third party leasing solutions to CDW customers for more than three years.  Under

                                       7

 10

the terms of an  operating  agreement,  FIRSTCORP  provides  leasing  management
services to CDW-L, with net earnings of the venture allocated 50% to CDW and 50%
to FIRSTCORP.  CDW Capital  Corporation  contributed  $100,000 to the capital of
CDW-L and has committed to loan up to $10 million to CDW-L on a secured basis to
fund new leases  initiated by CDW-L.  The  investment  in CDW-L is accounted for
using the equity  method.  The  investment and loan to CDW-L at June 30, 1999 is
not  material  to the total  assets of the  Company  and is included in Deferred
Income Taxes and Other Assets on the consolidated Balance Sheets.

                                       8


11



Item 2. Management's  Discussion and Analysis of Financial Condition and Results
of Operations

     The following  discussion and analysis of the Company's financial condition
and  results of  operations  should be read in  conjunction  with the  Company's
unaudited  condensed  consolidated  financial  statements  and the notes thereto
included elsewhere herein.

Results Of Operations
     The  following  table sets forth  financial  information  derived  from the
Company's  statements  of income  expressed  as a percentage  of net sales,  and
certain operating statistics.




Financial Information
                                                                         Percentage of Net Sales
                                                          --------------------------------------------------------
                                                             Three Months Ended              Six Months Ended
                                                                  June 30,                       June 30,
                                                          --------------------------------------------------------
                                                              1999         1998              1999         1998
                                                              ----         ----              ----         ----
                                                                                            
Net sales                                                    100.0 %      100.0 %           100.0 %      100.0 %
Cost of sales                                                 87.5         87.4              87.5         87.3
                                                          ------------------------        ------------------------
Gross profit                                                  12.5         12.6              12.5         12.7
Selling and administrative expenses                            6.5          6.5               6.6          6.6
                                                          ------------------------        ------------------------
Income from operations                                         6.0          6.1               5.9          6.1
Other income, net                                              0.2          0.2               0.2          0.2
                                                          ------------------------        ------------------------
Income before income taxes                                     6.2          6.3               6.1          6.3
Income tax provision                                           2.5          2.5               2.4          2.5
                                                          ------------------------        ------------------------
Net income                                                     3.7 %        3.8 %             3.7 %        3.8 %
                                                          ========================        ========================



Operating Statistics
                                                             Three Months Ended              Six Months Ended
                                                                  June 30,                       June 30,
                                                          --------------------------------------------------------
                                                              1999         1998              1999         1998
                                                              ----         ----              ----         ----
Number of orders shipped                                    616,603      557,410          1,240,755    1,135,659
Average order size                                             $969         $734               $916         $699
Number of account managers, end of period                       617          520
Customers serviced - commercial                             117,000      101,000            177,000      156,000
Customers serviced - consumer                                85,000      109,000            174,000      216,000
Annualized inventory turns                                       26           24                 25           25
                                                          --------------------------------------------------------



                                       9

 12



     The following  table  presents net sales by product line as a percentage of
total net sales.  Product  classifications  are based upon internal product code
classifications  and  are  retroactively   adjusted  for  the  addition  of  new
categories but not for changes in individual product categorization.



                                                Three Months Ended            Six Months
                 Analysis of Product Mix             June 30,                   Ended
                                                                               June 30,

                                                  1999      1998           1999        1998
                                                --------------------------------------------
                                                                          
          Notebooks & Laptops                     20.0 %   19.7 %           19.6  %   20.0 %
          Desktop Computers                       15.2     16.3             15.5      16.0
          Software                                13.8     14.2             13.4      13.5
          Printers                                11.1     12.2             11.6      12.8
          Data Storage Devices                    10.3     11.4             10.2      11.3
          Network & Communication Products         9.4      7.7              9.4       8.0
          Monitors & Video Products                7.3      9.4              7.3       9.0
          Add-On Boards & Memory                   4.5      3.9              4.6       4.2
          Supplies                                 3.6      N/A              3.6       N/A
          Input Devices                            2.4      2.6              2.4       2.7
          Multi-Media Devices                      1.2      2.0              1.4       2.0
          Other Accessories                        1.2      0.6              1.0       0.5
                                                 -------------------------------------------
          Total                                  100.0 %  100.0 %          100.0  %  100.0 %
                                                 ===========================================
 

Three months ended June 30, 1999 compared to three months ended June 30, 1998

     Net sales in the second quarter of 1999 increased  46.1% to a record $597.6
million  compared to $408.9 million in the second quarter of 1998. The Company's
average order size increased  32.0% to $969 from $734 in the prior year quarter.
The growth in net sales is primarily  attributable to a higher  concentration of
commercial  accounts, a higher level of sales per active account and an increase
in the  number  of  orders  shipped.  Sales to  commercial  accounts,  including
business,  government,  educational and  institutional  customers,  increased to
92.6% of net  sales in the  second  quarter  of 1999  from  87.2% in the  second
quarter of 1998. The number of active  commercial  customers  increased 15.8% to
117,000 in the  second  quarter  of 1999 from  101,000 in the second  quarter of
1998.  For the three months ended June 30,  1999,  the number of orders  shipped
increased 10.6% to over 616,000.  Notebook  computers  continue to represent the
largest portion of the Company's sales at 20.0%,  with dollar volume  increasing
more than 48% from the second quarter of 1998.

     The average  selling price of desktop and server CPU's  increased  5.5% and
the  average  selling  price of  notebook  CPU's  declined  2.4% from the second
quarter of 1998. The Company  believes  there may be future  decreases in prices
for personal computers and related products.  Such decreases require the Company
to sell more units in order to  maintain  or  increase  the level of sales.  The
Company's sales growth rate and operating results could be adversely affected if
future  manufacturer  price  reductions  or the  Company's  sales and  marketing
efforts  fail to  increase  the level of unit  sales.  Sales of Compaq,  Hewlett
Packard,  IBM, Microsoft and Toshiba products comprise a substantial  portion of
the Company's sales.  The loss of any of these, or any other key vendors,  could
have an adverse effect on the Company's  results from operations.  The statement
concerning future prices,  sales and results from operations are forward looking
statements that involve certain risks and uncertainties such as stated above.

                                       10

 13


     The fastest  growing  product  categories in terms of sales dollars and the
respective  growth  rates in the second  quarter of 1999  compared to the second
quarter of 1998 were:

             Product Category                Growth Rate
             ----------------                -----------
Add-On Boards & Memory                          68.0%
Notebooks & Laptops                             48.3%
Network and Communication Products              45.9%
Software                                        41.8%
Monitors & Video Products                       37.8%

Demand for certain  products  offered by the Company,  and the growth of certain
product categories,  are driven by advances in technology and the development of
new products and applications by the industry  manufacturers,  and acceptance of
these new  technologies  and products by end-users.  Any slowdown in the rate of
technological  advancement and new product development by industry manufacturers
could have a material adverse effect on the Company's future sales growth.

     Gross profit  decreased as a percentage of net sales to 12.5% for the three
months ended June 30, 1999, compared to 12.6% in the second quarter of 1998. The
decrease in gross profit as a percentage of net sales is primarily the result of
lower  selling  margins  achieved on certain  product  lines and lower levels of
inventory  price  protection  from vendors  partially  offset by  reductions  in
shipping costs. On a  forward-looking  basis, it is likely that the gross profit
margin achieved will fluctuate from quarter to quarter and may be lower than the
12.5% achieved in the second quarter of 1999.  The statement  concerning  future
gross profit is a forward  looking  statement  that  involves  certain risks and
uncertainties such as the continued  participation by vendors in inventory price
protection  and  rebate  programs,  pricing  strategies,   product  mix,  market
conditions  and other  factors  which  could  result in a  fluctuation  of gross
margins  below recent  experience.  Certain  manufacturers  may make  additional
changes  that  limit the  amount of price  protection  for which the  Company is
eligible.  Such changes  could have a negative  impact on gross margin in future
periods.  Vendor rebate programs are at the discretion of the vendor and many of
these  programs  are  dependent  on  achieving  certain  goals  and  objectives.
Accordingly,  there is no certainty  that such  programs  will continue at their
current levels or that the established goals and objectives will be attained.

     Selling and administrative expenses, which include net advertising expense,
other selling  administrative  expenses and the executive  incentive  bonus pool
remained consistent at 6.5% of net sales in the three months ended June 30, 1999
and 1998.

     Net  advertising  expense  decreased as a percentage  of net sales to 0.57%
from  0.65% for the three  months  ended June 30,  1999 and 1998,  respectively.
Gross  advertising  expense decreased to 2.8% of net sales in the second quarter
of 1999 versus 2.9% in the second quarter of 1998. The Company decreased catalog
circulation and the number of national  advertising pages versus the prior year,
while expanding its spending on its corporate branding campaign and other direct
marketing  activities.  Based upon the Company's planned marketing  initiatives,
future  levels of gross  advertising  expense as a  percentage  of net sales are
likely to be relatively consistent with or higher than the level achieved in the
second quarter of 1999. Cooperative  advertising  reimbursements as a percentage
of net sales  remained  consistent at 2.2% of net sales in the second quarter of
1999 and 1998. The cooperative  advertising  reimbursement rate may fluctuate in
future quarters depending on the level of vendor participation achieved, changes
in vendor programs and collection  experience.  The statements concerning future
advertising  expense  and  cooperative  advertising  reimbursements  are forward
looking  statements that involve certain risks and  uncertainties  including the
ability to identify and implement cost  effective  incremental  advertising  and
marketing  programs  as well as the  continued  participation  of vendors in the
cooperative advertising reimbursement program.

     Other selling and  administrative  costs  decreased to 5.6% of net sales in
the second  quarter of 1999 from 5.8% in the same period of 1998.  Increases  in
coworker  productivity  offset increased payroll and associated costs related to
our sales force expansion. As of June 30, 1999, there were 617 account managers,
an increase of 18.7% from 520 account  managers as of June 30, 1998.  Of the 617
account managers,  approximately 74% had fewer than 24 months experience and 52%
had fewer than 12 months, as compared to 73% and 54% at June 30, 1998.

                                       11

 14

     The executive  incentive bonus pool increased to $1.8 million in the second
quarter of 1999 from  $597,000  in the second  quarter  of 1998.  For 1999,  the
Compensation and Stock Option Committee established the bonus pool at 15% of the
increase in operating income over the prior year.

     Interest income, net of other expenses, decreased to $853,000 in the second
quarter of 1999 compared to $951,000 in the second  quarter of 1998,  due mainly
to lower levels of available cash.

     The effective  income tax rate,  expressed as a percentage of income before
income taxes, was 39.6% for the three months ended June 30, 1999 and 1998.

     Net income for the three months ended June 30, 1999, was $22.3  million,  a
43.1%  increase  over $15.6  million for the three  months  ended June 30, 1998.
Diluted  earnings  per share was $0.51 and $0.36 for the three months ended June
30, 1999 and 1998,  respectively,  an increase of 41.7%.  All per share  amounts
have been adjusted to reflect the  two-for-one  stock split effected in the form
of a stock dividend paid on May 19, 1999.

Six months ended June 30, 1999 compared to six months ended June 30, 1998

     Net  sales in the first  half of 1999  increased  43.3% to a record  $1.137
billion  compared  to $793.5  million in the first half of 1998.  The  Company's
average order size increased  31.1% to $916 from $699 in the first six months of
the prior year.  The growth in net sales is primarily  attributable  to a higher
concentration of commercial accounts, a higher level of sales per active account
and an increase in the number of orders shipped.  Sales to commercial  accounts,
including  business,   government,   educational  and  institutional  customers,
increased  to 91.5% of net  sales in the first  half of 1999  from  85.8% in the
first half of 1998. The number of active commercial customers increased 13.5% to
177,000  in the first half of 1999 from  156,000 in the first half of 1998.  For
the six months ended June 30, 1999, the number of orders shipped  increased 9.3%
to over 1.2  million.  Notebook  computers  continue  to  represent  the largest
portion of the Company's sales at 19.6%, with dollar volume increasing more than
40% from the first half of 1998.

     The average  selling price of desktop and server CPU's  increased  7.7% and
the average selling price of notebook CPU's declined 3.5% from the first half of
1998. The Company  believes there may be future decreases in prices for personal
computers and related products.  Such decreases require the Company to sell more
units in order to maintain or increase the level of sales.  The Company's  sales
growth  rate  and  operating  results  could be  adversely  affected  if  future
manufacturer  price reductions or the Company's sales and marketing efforts fail
to increase  the level of unit sales.  Sales of Compaq,  Hewlett  Packard,  IBM,
Microsoft and Toshiba products  comprise a substantial  portion of the Company's
sales. The loss of any of these, or any other key vendors, could have an adverse
effect on the Company's results from operations. The statement concerning future
prices,  sales and results from operations are forward  looking  statements that
involve certain risks and uncertainties such as stated above.

                                       12

 15


     The fastest  growing  product  categories in terms of sales dollars and the
respective  growth rates in the six months  ended June 30, 1999  compared to the
six months ended June 30, 1998 were:

            Product Category               Growth Rate
            ----------------               -----------
Add-On Boards & Memory                        56.2%
Network & Communication Products              50.4%
Software                                      42.4%
Notebooks & Laptops                           40.1%
Desktop Computers                             39.3%

     Gross profit  decreased  as a percentage  of net sales to 12.5% for the six
months  ended June 30,  1999,  compared to 12.7% in the first half of 1998.  The
decrease in gross profit as a percentage of net sales is primarily the result of
lower  selling  margins  achieved on certain  product  lines and lower levels of
inventory  price  protection  from vendors  partially  offset by  reductions  in
shipping costs. On a  forward-looking  basis, it is likely that the gross profit
margin achieved will fluctuate from quarter to quarter and may be lower than the
12.5% achieved in the first half of 1999. The statement  concerning future gross
profit  is  a  forward  looking   statement  that  involves  certain  risks  and
uncertainties such as the continued  participation by vendors in inventory price
protection  and  rebate  programs,  pricing  strategies,   product  mix,  market
conditions  and other  factors  which  could  result in a  fluctuation  of gross
margins  below recent  experience.  Certain  manufacturers  may make  additional
changes  that  limit the  amount of price  protection  for which the  Company is
eligible.  Such changes  could have a negative  impact on gross margin in future
periods.  Vendor rebate programs are at the discretion of the vendor and many of
these  programs  are  dependent  on  achieving  certain  goals  and  objectives.
Accordingly,  there is no certainty  that such  programs  will continue at their
current levels or that the established goals and objectives will be attained.

     Selling and administrative expenses, which include net advertising expense,
other selling  administrative  expenses and the executive  incentive  bonus pool
remained at 6.6% of net sales in the six months ended June 30, 1999 and 1998.

     Net  advertising  expense  decreased as a percentage  of net sales to 0.67%
from 0.70% for the six months ended June 30, 1999 and 1998, respectively.  Gross
advertising  expense  decreased  to 2.8% of net sales in the first  half of 1999
versus 3.1% in the first half of 1998. The Company decreased catalog circulation
and the  number of  national  advertising  pages  versus the prior  year,  while
expanding  its  spending on its  corporate  branding  campaign  and other direct
marketing  activities.  Based upon the Company's planned marketing  initiatives,
future  levels of gross  advertising  expense as a  percentage  of net sales are
likely to be relatively consistent with or higher than the level achieved in the
first half of 1999.  Cooperative  advertising  reimbursements as a percentage of
net sales  declined to 2.1% of net sales in the first half of 1999 from 2.4% for
the six months ended June 30, 1998. The  cooperative  advertising  reimbursement
rate  may  fluctuate  in  future  quarters  depending  on the  level  of  vendor
participation  achieved,  changes in vendor programs and collection  experience.
The statements concerning future advertising expense and cooperative advertising
reimbursements  are forward  looking  statements  that involve certain risks and
uncertainties  including  the ability to identify and implement  cost  effective
incremental  advertising  and  marketing  programs  as  well  as  the  continued
participation of vendors in the cooperative advertising reimbursement program.

     Other selling and  administrative  costs  decreased to 5.6% of net sales in
the  first  half of 1999  from 5.8% in the same  period  of 1998.  Increases  in
coworker  productivity  offset increased payroll and associated costs related to
our sales force expansion. As of June 30, 1999, there were 617 account managers,
an increase of 18.7% from 520 account  managers as of June 30, 1998.  Of the 617
account managers,  approximately 74% had fewer than 24 months experience and 52%
had fewer than 12 months, as compared to 73% and 54% at June 30, 1998.

     The executive  incentive  bonus pool increased to $3.2 million in the first
six months of 1999 from $1.1  million in the first half of 1998.  For 1999,  the
Compensation and Stock Option Committee established the bonus pool at 15% of the
increase in operating income over the prior year.

                                       13

 16

     Interest  income,  net of other expenses,  decreased to $1.8 million in the
first half of 1999  compared  to $2.0  million  in the first  half of 1998,  due
mainly to lower levels of available cash.

     The effective  income tax rate,  expressed as a percentage of income before
income taxes, was 39.6% for the six months ended June 30, 1999 and 1998.

     Net income for the six months ended June 30,  1999,  was $42.0  million,  a
38.4%  increase  over  $30.4  million  for the six months  ended June 30,  1998.
Diluted earnings per share was $0.96 and $0.70 for the six months ended June 30,
1999 and 1998,  respectively,  an increase of 37.1%.  All per share amounts have
been adjusted to reflect the  two-for-one  stock split effected in the form of a
stock dividend paid on May 19, 1999.



Liquidity and Capital Resources

Working Capital

     The  Company  has   historically   financed  its   operations  and  capital
expenditures primarily through cash flow from operations,  short-term borrowings
and public offerings of common stock.

     At June 30, 1999,  the Company had cash,  cash  equivalents  and marketable
securities of $77.7 million and working capital of $274.6 million,  representing
an increase of $7.0 million in cash, cash equivalents and marketable  securities
and an increase of $45.8 million in working capital from December 31, 1998.

     The Company has an  aggregate  $50  million  available  pursuant to two $25
million  unsecured  lines of credit with two financial  institutions,  one which
expires in June 2000, at which time the Company  intends to renew the line,  and
another which does not have a fixed expiration date.  Borrowings under the first
credit facility bear interest at the prime rate less 2 1/2%,  LIBOR plus 1/2% or
the federal funds rate plus 1/2%, as determined by the Company. Borrowings under
the second credit  facility  bear interest at the prime rate less 2 1/2%,  LIBOR
plus .45% or the federal funds rate plus .45%, as determined by the Company.  At
June 30, 1999, there were no borrowings against either of the credit facilities.

     The Company's  current  primary and  anticipated use of cash is to fund the
growth in working capital and capital  expenditures.  The Company  believes that
the funds held in cash, cash  equivalents and marketable  securities,  and funds
available  under the credit  facilities will be sufficient to fund the Company's
working capital and cash requirements at least through June 30, 2000.

Cash flows for the six months ended June 30, 1999

     Net cash provided by operating activities for the six months ended June 30,
1999,  was  slightly  less  than  $10.0  million.   The  primary  factors  which
historically  affect  the  Company's  cash flows from  operations  are  accounts
receivable, merchandise inventory and accounts payable. The increase in accounts
receivable resulted primarily from increased sales volume and an increase in the
percentage  of net sales  generated  from  commercial  accounts with open credit
terms to 68.9% from 62.4% for the twelve  months ended June 30, 1998.  Inventory
increased  during  the period in  response  to  increased  sales  growth  rates.
Annualized  inventory turnover remained consistent at approximately 25 times for
the six months ended June 30, 1999 and 1998.  The  increase in accounts  payable
reflects  timing of payments to vendors at the end of the respective  periods as
well as the increase in inventory levels during the year.

                                       14


 17

     Cash  provided by  operating  activities  for the six months ended June 30,
1999,  was  positively  impacted  by a $4.6  million  tax  benefit  recorded  to
paid-in-capital,  relating to the  exercise of shares  pursuant to the MPK Stock
Option Plan.

     Net cash provided by investing activities for the six months ended June 30,
1999,  was $10.1  million,  net of  approximately  $4.9 million used for capital
expenditures.  The  capital  expenditures  made by the  Company  were  primarily
related  to the  purchase  of  machinery  and  equipment  for the  Vernon  Hills
facility.

Leasing Joint Venture

     In April 1999, CDW Capital Corporation,  a wholly-owned  subsidiary of CDW,
and  First  Portland  Corporation   ("FIRSTCORP")  formed  CDW  Leasing,  L.L.C.
("CDW-L"), a 50/50 joint venture. CDW-L provides captive leasing services to CDW
customers.  FIRSTCORP is a full-service  leasing  organization that has provided
third party leasing solutions to CDW customers for more than three years.  Under
the terms of an  operating  agreement,  FIRSTCORP  provides  leasing  management
services to CDW-L, with net earnings of the venture allocated 50% to CDW and 50%
to FIRSTCORP.  CDW Capital  Corporation  contributed  $100,000 to the capital of
CDW-L and has committed to loan up to $10 million to CDW-L on a secured basis to
fund new leases  initiated by CDW-L.  The  investment  in CDW-L is accounted for
using the equity  method.  The  investment and loan to CDW-L at June 30, 1999 is
not  material  to the total  assets of the  Company  and is included in Deferred
Income Taxes and Other Assets on the consolidated Balance Sheets.

Year 2000 Readiness Disclosure

General
     The Year 2000  Issue  ("Y2K")  is the  result of  computer  programs  being
written using two digits rather than four to define the applicable  year. Any of
the Company's computer programs that have date-sensitive  software may recognize
a date using "00" as the year 1900  rather  than  2000.  This could  result in a
system failure or miscalculations causing disruptions of operations,  including,
among other things, a temporary  inability to process  transactions,  receive or
ship products, send invoices, or engage in similar normal business activities.

     The Company has established a Y2K project designed to make all its hardware
and software  systems Y2K compliant by December 31, 1999. The Company intends to
contract an outside organization to review its project methodology and status of
all aspects of the Y2K issue.

Project
     CDW's Y2K project  consists of two components,  internal and external.  The
internal  section has been  divided  into five steps which are  currently  being
completed by the Y2K Team:
1.   Awareness -  Awareness   includes  evaluating   industry  best   practices,
     generating management and  employee awareness, establishing  communications
     methods and establishing the project team.
2.   Assessment  -  This  phase  includes   hardware  and  software   compliance
     assessment,   establishment   of  the  size  and  scope  of  the   project,
     establishment of a project timeline,  priorities,  budgeting and allocation
     of resources.
3.   Renovation - Renovation consists of establishing a detailed  implementation
     plan, the design of new systems and system  corrections,  writing of system
     code and software and hardware testing.
4.   Validation - Validation includes testing new systems and system corrections
     to ensure they will function  properly in operation.
5.   Implementation -  Final  certification  of  the new and corrected  systems,
     implementation  of  the systems and  monitoring  to ensure they continue to
     function.

                                       15

 18

     All phases of the project as they relate to internal systems were completed
as of March 31, 1999. The Company plans to focus the majority of its efforts for
the remainder of 1999 on the external portion of the project while continuing to
validate  and test its  internal  systems to ensure  those  systems are properly
converted.

     The external  portion of the project focuses on assessing the Y2K readiness
of  product  and  service  vendors  and its  potential  impact on the  Company's
operations.  The Company  will work through  issues with its  business  partners
during the remainder of 1999 to minimize potential business interruptions.  This
portion of the project is expected to be completed prior to December 31, 1999.

Costs
     The  Company  estimates  that  total  costs  for the Y2K  project,  through
December 31, 1999,  will range between  $750,000 and $1 million.  As of June 30,
1999 the Company has incurred, and recorded as operating expenses, approximately
$370,000 in costs related to the project, of which  approximately  $130,000 were
incurred  during the six  months  ended June 30,  1999.  Essentially  all of the
Company's  expenditures  to date are for internal  payroll  costs related to the
assessment and correction of internal systems.  Of the estimated remaining costs
of $380,000 to $630,000,  approximately  75% relate to the cost of assessing and
communicating with vendors and 25% relate to the correction of internal systems.

Risks
     The  failure  to  correct  a  material  Y2K  problem  could  result  in  an
interruption  in,  or a  failure  of,  certain  normal  business  activities  or
operations.  Such failures could  materially and adversely  affect the Company's
results of operations and financial  condition.  Due to the general  uncertainty
inherent in the Y2K problem,  resulting in part from the  uncertainty of the Y2K
readiness of third-party  suppliers,  the Company is unable to determine at this
time whether the consequences of Y2K failures will have a material impact on the
Company's  results of  operations  and  financial  condition.  The Company's Y2K
project is expected to  significantly  reduce the Company's level of uncertainty
about the Y2K problem and, in particular, about the Y2K compliance and readiness
of its material  vendors.  The Company believes that, with the completion of the
project as scheduled,  the  possibility of significant  interruptions  of normal
operations should be minimized.

   The statements  concerning future impact of the Y2K issue are forward looking
statements that involve certain risks and  uncertainties,  such as the inability
to receive products on a timely basis from vendors,  ship products to customers,
receive  payments  from  customers and other factors which could have a material
impact on the Company's  results from  operations.  Certain  vendors may fail to
adequately  prepare their  information  systems or the Company's own Y2K project
may not correct all Y2K issues.  Accordingly,  there is no certainty that either
the Company or its vendors will  complete  their Y2K projects  prior to December
31, 1999.

     Certain  statements  included in  Management's  Discussion  and Analysis of
Financial  Condition and Results of Operations  concerning  the Company's  sales
growth, gross profit as a percentage of sales, advertising expense,  cooperative
advertising  reimbursements  and the  potential  impact on operations of the Y2K
issue  are   forward-looking   statements   that  involve   certain   risks  and
uncertainties, as specified herein.

                                       16

 19



Part II       Other Information

Item 1.       Legal Proceedings

     The Company is currently not a party to any material legal proceedings.

Item 4.       Submission of Matters to a Vote of Security Holders

     (a) The Company held an annual meeting of Shareholders on May 18, 1999.

     (b) The names of all Directors of the Company are set forth in (c) below.

     (c) Three  matters were voted upon and  approved by the  Shareholders.  The
         presentation below briefly describes the matter voted upon and  results
         of Shareholders' votes.

   1.         Election of Directors


                                      Votes For    Votes Against     Abstentions
                                     ----------    -------------     -----------
              By Nominee
              - Michael P. Krasny    41,534,944                -          33,519
              - Gregory C. Zeman     41,534,944                -          33,519
              - Daniel B. Kass       41,534,944                -          33,519
              - Joseph Levy, Jr.     41,534,944                -          33,519
              - Michelle L. Collins  41,534,944                -          33,519



   2.         Ratification of Auditors

              The selection of  PricewaterhouseCoopers  LLP,  independent public
              accountants,  as  auditors  of the  Company  for  the  year  ended
              December 31, 1999.


                                      Votes For    Votes Against     Abstentions
                                     ----------    -------------     -----------
                                     41,549,202           24,600          28,180


   3.         CDW Officer and Manager Bonus Plan

              The approval of an amendment to the CDW Officer and Manager  Bonus
              Plan.


                                      Votes For    Votes Against     Abstentions
                                     ----------    -------------     -----------
                                     31,829,540        9,715,904          57,348


Item 6.       Exhibits and Reports on Form 8-K

     (a) Exhibits:

                                       17

 20

         10 (yy) Revolving  Note  between  the Company and LaSalle National Bank
                 dated June 28, 1999
         27 (a)  Financial Data Schedule(for the three months ended June 30,
                 1999)


     (b) Reports on Form 8-K:

         There  were  no reports on Form 8-K filed  for the  three  months ended
         June 30, 1999.


                                       18


 21



                                   SIGNATURES


     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 thereunto duly authorized.


                                                    CDW Computer Centers, Inc.
                                                    (Registrant)


           Date     August 6, 1999                  /s/ Harry J. Harczak, Jr.
                    ---------------------           ----------------------------
                                                    Harry J. Harczak, Jr.
                                                    Chief Financial Officer &
                                                    Treasurer

           Date     August 6, 1999                  /s/ Sandra M. Rouhselang
                    ---------------------           ----------------------------
                                                    Sandra M. Rouhselang
                                                    Controller




                                       19


 22



                                Index to Exhibits

10 (yy) Revolving Note between the Company and LaSalle  National Bank dated June
        28, 1999
27      Financial Data Schedule