Nine months ended September 30,
                                                                                    -------------------------------
                                                                                          1999            1998
                                                                                      ------------    ------------
                                                                                     (Unaudited)         (Unaudited)
Cash flows from operating activities:
     Net loss                                                                         $(45,787,300)   $ (9,579,800)
     Adjustments to reconcile net loss to net cash used in operating activities:
         Depreciation and amortization                                                   2,190,700         325,600
         Amortization of debt discount and issuance costs                                       --         236,400
         Non-cash compensation expense                                                   4,483,100         348,000
         Deferred interest on debt                                                              --         393,800
         Other                                                                             (19,400)          1,500
         Changes in operating assets and liabilities, net of effect of acquisition:
            Accounts receivable, net                                                    (4,731,300)       (550,800)
            Other assets                                                                (1,388,200)        (90,300)
            Accounts payable and accrued expenses                                        6,059,200       1,206,600
            Accrued compensation                                                           442,200          41,000
            Guide fees payable                                                             188,100         113,000
            Deferred revenue                                                               447,500         (74,600)
            ESPP deductions withheld                                                       532,100              --
                                                                                      ------------    ------------

                        Net cash used in operating activities                          (37,583,300)     (7,629,600)
                                                                                      ------------    ------------

Cash flows used in investing activities:
     VantageNet acquisition, net                                                          (586,600)             --
     Purchase of intangible assets                                                        (651,600)             --
     Capital expenditures                                                               (6,279,900)       (448,300)
                                                                                      ------------    ------------

                        Net cash used in investing activities                           (7,518,100)       (448,300)
                                                                                      ------------    ------------

Cash flows from financing activities:
     Proceeds from issuance of common stock related to initial
       public offering and concurrent placement, net                                    81,049,000              --
     Proceeds from issuance of redeemable preferred stock                                       --       6,854,500
     Proceeds from issuance of loans payable                                                    --       1,800,000
     Proceeds from issuance of common stock in connection with
       the exercise of  options                                                            237,400          69,900
     Proceeds from secured credit facility                                                 781,300         507,700
     Principal payments under secured credit facility                                     (253,600)        (47,000)
     Principal payments under capital leases                                              (158,800)       (169,100)
     Deferred offering/financing costs                                                     568,700              --
                                                                                      ------------    ------------

                        Net cash provided by financing activities                       82,224,000       9,016,000
                                                                                      ------------    ------------

                        Net increase in cash and cash equivalents                       37,122,600         938,100

         Cash and cash equivalents at beginning of period                               10,644,300         303,200
                                                                                      ------------    ------------

         Cash and cash equivalents at end of period                                   $ 47,766,900    $  1,241,300
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