Document:

<PAGE>

                                                                   EXHIBIT 10.70
March 15, 2001

Mr. Michael Lee
1750 E. Ocean Blvd #708
Long Beach, CA 90802

Dear Michael:

Cais Internet, Inc. ("CAIS", or the "company") is pleased to extend to you an
offer of employment as  President and Chief Executive Officer of CAIS ("CEO"),
subject to a satisfactory background check and approval by the board of
directors of CAIS (the "Board"), on the following terms and conditions:

     1.  You will report to the Board, or a Chairman to be designated by the
         Board. Your principal duties will include overall responsibility for
         all aspects of the operations and management of CAIS. Your full-time
         employment with CAIS will commence on March 19, 2001.

     2.  In consideration of your performance of the above duties you will
         receive compensation as follows, so long as you remain employed by CAIS
         as its CEO:

         A.  Base Salary.  Your base salary will be $350,000.00 per year,
             -----------
             payable in accordance with CAIS' normal payroll practices.

         B.  Annual Bonus.  You will be eligible for an annual (fiscal year)
             ------------
             bonus ranging from 0% to 100% of your base salary, with the maximum
             targeted bonus equal to 100% of your base salary (the "Target
             Bonus"), based upon CAIS' performance and the achievement of
             individual and company goals and objectives, as mutually and
             reasonably agreed upon by you and the Board. Within your first year
             of employment, $100,000 of this bonus will be guaranteed and
             payable in equal quarterly installments (upon the close of each of
             the company's fiscal quarters, beginning with the close of the
             second quarter of fiscal year 2001) (the "Guaranteed Bonus"). Also,
             to the extent that your performance, and that of the company's,
             exceeds goals and objectives mutually and reasonably agreed upon by
             you and the Board, the Board will consider, in its sole discretion,
             the payment to you of additional "out-performance" bonus amounts.
             With the exception of the Guaranteed Bonus, any additional bonus
             amounts will be paid subsequent to each fiscal year end, in
             accordance with CAIS' normal practice of paying annual bonuses.
             With the exception of the Guaranteed Bonus, any additional bonus
             amounts payable in respect of your first year of employment will be
             prorated based on that portion of fiscal year 2001 for which you
             are employed. Also, with respect to any annual bonuses, you must be
             in the employ of CAIS at the time such bonuses are paid to receive
             any applicable bonus otherwise payable in respect of the preceding
             fiscal year.

                                       1
<PAGE>

     C.  Signing Bonus.  Upon your acceptance of the terms of this offer,
         -------------
         evidenced by your signature below, and upon approval by the Board of
         such terms, you will be eligible to receive a one time signing bonus of
         $100,000, with such bonus to be paid to you within five business days
         after your commencement of your duties as CEO.

     D.  Benefits.  Generally, you will be provided employee benefits
         --------
         commensurate with benefits provided to other CAIS employees in
         executive positions, including, to the extent that CAIS offers a 401(k)
         plan, participation in this plan in accordance with the company's
         participation policies. Additionally, premiums for medical, dental, and
         vision coverages, and any premiums for life insurance coverages, will
         be paid by CAIS, subject to required employee deductibles, exclusions,
         co-payments, and waiting periods.

     E.  Vacation.  You will receive four weeks paid vacation during each year
         --------
         following your commencement of employment with CAIS. You shall be
         eligible to take any accrued vacation following your first six months
         of employment with CAIS.

     F.  Incentive Equity.  You understand that CAIS is attempting to
         ----------------
         recapitalize its operations, and in conjunction with such attempts to
         recapitalize (the completion and certainty of which cannot be
         guaranteed), CAIS intends to provide you with stock options in the
         recapitalized company. If and when a successful recapitalization of the
         company occurs, and to the extent you are employed by the company at
         that time, you will receive options to purchase three percent (3%) of
         the shares of common stock of the company (the "Common Stock"), on a
         fully diluted basis at such time. These options will vest in equal
         quarterly installments over a four-year period. Upon the occurrence of
         a change of control of 50% or more of the fully diluted ownership of
         the company (a "Change of Control"), or upon termination of your
         employment by the company without cause, vesting of these options will
         accelerate and the options will immediately become 100% vested and
         exercisable, provided that, in the event of a Change of Control, you
         must continue to be employed with the company through such triggering
         event.

     G.  Performance Based Incentive Equity.  In addition to the incentive
         ----------------------------------
         equity described in Paragraph F above, and also subject to the
         successful recapitalization of the company, you will receive an option
         to purchase an additional two percent (2%) of the Common Stock, on a
         fully diluted basis at such time, subject to you and the company
         meeting certain performance objectives to be determined by the Board.
         If granted, these performance based options would be vested and fully
         exercisable upon the earlier to occur of a) a Change of Control, b)
         termination of your employment by the company without cause and c) the
         eighth anniversary of the date the options are granted.

         The terms and conditions of your stock options described in Sections F
         and G above will be similar to those of options held by other CAIS
         managers in executive positions, and will be governed by the definitive
         option agreement to be entered into by and between you and CAIS. Please
         note that CAIS' financial structure and future capitalization is
         uncertain at this time, and therefore this offer is a good faith
         attempt to outline our present incentive compensation intentions and
         cannot be relied upon as a guarantee of the grant of any stock-based
         awards in the event no recapitalization occurs.

3.   You shall relocate to the Washington, D.C. area no later than December 31,
     2001. Upon relocation to the Washington, D.C. area, CAIS will pay, or will
     reimburse you for, your actual,

                                       2
<PAGE>

     reasonable, out-of-pocket moving expenses from your home in the Los
     Angeles, California area, including such reasonable costs associated with
     moving, storage, and up to 90 days of temporary housing. During such period
     when you may utilize temporary housing, you will be responsible for all
     incidental charges associated with your stay in temporary housing (e.g.,
     telephone charges, meals, dry cleaning, etc).

     Until such time as you relocate, CAIS will also reimburse you for the
     reasonable travel costs associated with assuming your new responsibilities,
     including such reasonable costs associated with airfare, housing, meals,
     and car rental. All moving and relocation expenses must be pre-approved in
     advance by CAIS.  Detailed receipts and proof of payment must also be
     submitted for reimbursement.  If for any reason you terminate your
     employment with CAIS within the first 24 months of employment, except in
     the case that your duties, title, or compensation have been materially
     reduced during this twenty four month period, you agree to reimburse CAIS
     for all such expenses on a pro rata basis, based upon 24 months less the
     number of months that you were actually employed by CAIS.

4.   This offer does not constitute an agreement of guaranteed employment for
     any specific term. Your employment with CAIS is "at will," and may be
     terminated by you or by us at any time, provided, however , that you may
     only terminate your employment following thirty (30) days advanced written
     notice to the company of such termination (which notice requirement may be
     waived by CAIS). If your employment is terminated without cause by CAIS,
     under either current ownership or a successor owner of 50% or more, you
     will be entitled to payment, in equal installments over 24 months, of an
     amount equal to two times your then base salary.

5.   You also agree to be bound by a covenant not to disclose confidential
     information of the company and its affiliates (other than as required by a
     court of competent jurisdiction or with the consent of the Board) at all
     times during and after your employment with CAIS. For one year after
     termination of your employment with CAIS, you also agree to be bound by a
     covenant not to compete with the company, with this covenant being specific
     to the regions and specific product offerings being provided by CAIS, and
     by a covenant not to raid its customers, clients, or employees.

To document your acceptance of the above terms, please sign and date the
enclosed copy of this letter where indicated below and return the signed copy to
me.  Michael, we are excited that you have accepted our offer of employment and
we look forward to having you on the CAIS team.

CAIS Internet, Inc.

By:____________________
Member, Board of Directors

Accepted and Agreed this ___ day of _____________, 2001

______________________
Michael Lee

                                       3<PAGE>

                                                                   EXHIBIT 10.71

March 15, 2001

Mr. Amit Rikhy
4413 Torrey Pines Drive
Chino Hills, California  91709

Dear Amit:

Cais Internet, Inc. ("CAIS", or the "company") is pleased to extend to you an
offer of employment as Senior Vice President of Strategic Planning ("SVP,
Strategic Planning"), subject to a satisfactory background check and approval by
the board of directors of CAIS (the "Board"), on the following terms and
conditions:

     1.   You will report to the Chief Executive Officer (the "CEO"). Your
          principal duties will consist of managing the business development
          functions of CAIS, including significant participation in developing
          financial strategies, assisting in the contemplated recapitalization
          of the company, and generally working closely with the CEO to create a
          financially successful enterprise. Your full-time employment with CAIS
          will commence on March 19, 2001.

     2.   In consideration of your performance of the above duties you will
          receive compensation as follows, so long as you are in the employ of
          CAIS as its SVP, Strategic Planning:

          A.  Base Salary. Your base salary will be $225,000 per year, payable
              -----------
              in accordance with CAIS' normal payroll practices. You will be
              eligible for annual salary reviews and adjustments, based on
              performance and at the discretion of the Board.

          B.  Annual Bonus. You will be eligible for an annual bonus ranging
              ------------
              from 0% to 50% of your base salary, with the maximum targeted
              bonus equal to 50% of your base salary (the "Target Bonus"), based
              upon CAIS' performance and the achievement of individual and
              company goals and objectives, as mutually and reasonably agreed
              upon by you and the Board. Within your first year of employment,
              $50,000 of this bonus will be guaranteed and payable in equal
              quarterly installments (upon the close of each of the company's
              fiscal quarters, beginning with the close of the second quarter of
              fiscal year 2001) (the "Guaranteed Bonus"). Also, to the extent
              that your performance, and that of the company's, exceeds mutually
              agreed upon goals and objectives, the Board will consider, in its
              sole discretion, the payment to you of additional "out-
              performance" bonus amounts. With the exception of the Guaranteed
              Bonus, any additional bonus amounts will be paid subsequent to
              each fiscal year end, in accordance

                                       1
<PAGE>

              with CAIS' normal practice of paying annual bonuses. With the
              exception of the Guaranteed Bonus, any additional bonus amounts
              payable in respect of your first year of employment will be
              prorated based on that portion of fiscal year 2001 for which you
              are employed. Also, with respect to any annual bonuses, you must
              be in the employ of CAIS at the time such bonuses are paid to
              receive any applicable bonus otherwise payable in respect of the
              preceding fiscal year.

          C.  Signing Bonus. Upon your acceptance of the terms of this offer,
              -------------
              evidenced by your signature below, and upon approval by the Board
              of such terms, you will be eligible to receive a one time signing
              bonus of $40,000, with such bonus to be paid to you within five
              business days after your commencement of your duties as SVP,
              Strategic Planning.

          D.  Benefits. Generally, you will be provided employee benefits
              --------
              commensurate with benefits provided to other CAIS employees in
              executive positions, including, to the extent that CAIS offers a
              401(k) plan, participation in this plan in accordance with the
              company's participation policies. Additionally, premiums for
              medical, dental, and vision coverages, and any premiums for life
              insurance coverages, will be paid by CAIS, subject to required
              employee deductibles, exclusions, co-payments, and waiting
              periods.

          E.  Vacation. You will receive four weeks paid vacation during each
              --------
              year following your commencement of employment with CAIS. You
              shall be eligible to take any accrued vacation following your
              first six months of employment with CAIS.

          F.  Incentive Equity. You understand that CAIS is attempting to
              ----------------
              recapitalize its operations, and in conjunction with such attempts
              to recapitalize (the completion and certainty of which cannot be
              guaranteed), CAIS intends to provide you with stock options in the
              recapitalized company. If and when a successful recapitalization
              of the company occurs, and to the extent you are employed by the
              company at that time, you will receive options to purchase six
              tenths of one percent (0.6%) of the shares of common stock of the
              company (the "Common Stock"), on a fully diluted basis at such
              time. These options will vest in equal quarterly installments over
              a four-year period. Upon the occurrence of a change of control of
              50% or more of the fully diluted ownership of the company (a
              "Change of Control"), or upon termination of your employment by
              the company without cause, vesting of these options will
              accelerate and the options will immediately become 100% vested and
              exercisable, provided that, in the event of a Change of Control,
              you must continue to be employed with the company through such
              triggering event.

          G.  Performance Based Incentive Equity. In addition to the incentive
              ----------------------------------
              equity described in Paragraph F above, and also subject to the
              successful recapitalization of the company, additional options
              equal to up to four tenths of one percent (0.4%) of the Common
              Stock, on a fully diluted basis at such time, subject to you and
              the company meeting certain performance objectives to be
              determined by the Board. If granted, these performance based
              options would be vested and fully exercisable upon the earlier to
              occur of a) a Change of Control, b) termination of your employment
              by the company without cause and c) the eighth anniversary of the
              date the options are granted.

                                       2
<PAGE>

            The terms and conditions of your stock options described in Sections
            F and G above will be similar to those of options held by other CAIS
            managers in executive positions, and will be governed by the
            definitive option agreement to be entered into by and between you
            and CAIS. Please note that CAIS' financial structure and future
            capitalization is uncertain at this time, and therefore this offer
            is a good faith attempt to outline our present incentive
            compensation intentions and cannot be relied upon as a guarantee of
            the grant of any stock-based awards in the event no recapitalization
            occurs.

     3.  You have agreed to relocate to the Washington, D.C. area no later than
         December 31, 2001. At the sole discretion of the Board, this relocation
         date may be extended. Upon relocation to the Washington, D.C. area,
         CAIS will pay, or will reimburse you for, your actual, reasonable, out-
         of-pocket moving expenses from your home in the Los Angeles, California
         area, including such reasonable costs associated with moving, storage,
         and up to 90 days of temporary housing. During such period when you may
         utilize temporary housing, you will be responsible for all incidental
         charges associated with your stay in temporary housing (e.g., telephone
         charges, meals, dry cleaning, etc).

         Until such time as you relocate, CAIS will also reimburse you for the
         reasonable travel costs associated with assuming your new
         responsibilities, including such reasonable costs associated with
         airfare, housing, meals, and car rental. All moving and relocation
         expenses must be pre-approved in advance by CAIS. Detailed receipts and
         proof of payment must also be submitted for reimbursement. If for any
         reason you terminate your employment with CAIS within the first 24
         months of employment, except in the case that your duties, title, or
         compensation have been materially reduced during this twenty four month
         period, you agree to reimburse CAIS for all such expenses on a pro rata
         basis, based upon 24 months less the number of months that you were
         actually employed by CAIS.

     4.  This offer does not constitute an agreement of guaranteed employment
         for any specific term. Your employment with CAIS is "at will," and may
         be terminated by you or by us at any time, provided, however , that you
         may only terminate your employment following thirty (30) days advanced
         written notice to the company of such termination (which notice
         requirement may be waived by CAIS). If your employment is terminated
         without cause by CAIS, under either current ownership or a successor
         owner of 50% or more, you will be entitled to payment, in equal
         installments over 12 months, of an amount equal to one times your then
         base salary, plus a lump sum payment equal to your Target Bonus, on a
         pro rata basis, based upon 12 months less the number of months that you
         were actually employed by CAIS during the fiscal year in which your
         employment is terminated, payable at such time as annual bonuses are
         normally paid.

     5.  You also agree to be bound by a covenant not to disclose confidential
         information of the company and its affiliates (other than as required
         by a court of competent jurisdiction or with the consent of the Board)
         at all times during and after your employment with CAIS. For one year
         after termination of your employment with CAIS, you also agree to be
         bound by a covenant not to compete with the company, with this covenant
         being specific to the regions and specific product offerings being
         provided by CAIS, and by a covenant not to raid its customers, clients,
         or employees.

                                       3
<PAGE>

To document your acceptance of the above terms, please sign and date the
enclosed copy of this letter where indicated below and return the signed copy to
me.  Amit, we are excited that you have accepted our offer of employment and we
look forward to having you on the CAIS team.

Sincerely,

William M. Caldwell, IV
President and Chief Executive Officer

Accepted and Agreed this ___ day of ______________, 2001:

______________________
Amit Rikhy

                                       4

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00024-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00024-of-00352.parquet"}]]