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Exhibit 10.56 September 21, 1999 Mr. Eduardo Escalante
Alcazar 105, Col. Valle de San Angel
Garza Garcia, N.L. 66290 Mexico
528-303-1970 Dear Eduardo, This letter is to confirm the intention of AOL Mexico S de R.L. de C.V. (AOL Mexico) to extend to
you an offer of employment as President and General Manager. This offer is subject to your
acceptance and execution of AOL Mexicos Agreement(s) to Preserve Confidentiality, Non-Competition
and Proprietary Rights. This letter summarizes the principal terms and conditions of the
appointment. Commencement  
    You shall be appointed to the position of President and General
Manager of AOL Mexico. Your appointment shall commence on 30
days or earlier as mutually agreed in writing. Duties  
    As President and General Manager for AOL Mexico, you will be
expected to give your full-time commitment to the duties of
your office, and you will be expected to faithfully and
diligently perform your duties.  
    You will be based in the Mexico City metropolitan area, but may
be asked to relocate with your consent.  
    You will be required to comply with the rules, regulations and
policies of AOL Mexico currently in force and as they are
updated from time to time.  
    During the course of your employment, it may be necessary to
expand your duties, within the general scope of your position,
or change your function. AOL Mexico reserves the right to
assign other duties to you at any time, it being understood
that you will not be assigned duties which you cannot
reasonably perform. 1




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Remuneration Package  
    Your monthly salary will be Mex. $170,000.  
    Your remuneration will be reviewed whenever required by law or
from time to time, at AOL Mexicos discretion, based on your
performance or industry benchmarks.  
    You will be entitled to 30 days of salary as aguinaldo. The
aguinaldo will be payable in December on a yearly basis, and
in December 1999 you will be paid on a prorata basis.  
    Other standard AOL Mexico benefits made available to all
employees will be provided to you, including life and medical
insurance benefits. Mr Javier Aguirre ( 1-954-772-1353) will be
glad to explain to you the details of the plans we have already
set up.  
    It is our intention to develop an AOL Latin America Stock
Option Plan. As part of this plan you will be eligible to
receive AOL Latin America JV stock options. Exact timing and
amounts will be communicated at a later date.  
    You will participate in an annual incentive plan. Details of
this plan will be provided to you but as an indication if you
achieve all performance measures established by AOL Mexico you
will receive an amount equivalent to 50% of your base salary.
The plan requires you to propose appropriate performance
targets in the area of customer service, job performance and
professional development, which will be consistent with AOL
Mexicos overall business plan and objectives.  
    You will be entitled to receive 30 days of salary as vacation
premium. In addition, you will be entitled to take 10 days off
per year, which are covered within the 30 days of salary
described in the foregoing sentence.  
    You will be provided a company automobile by AOL Mexico while
you are appointed to AOL Mexico. The type of car will be
according to local policy which is currently being developed.  
    You will receive relocation benefits in accordance to the
attached guide to employee relocation policy. Termination  
    AOL Mexico may terminate your employment without notice for any
serious or persistent breach of this Agreement including
intentional disobedience, dishonesty or gross negligence. In
this case, you will be paid the remuneration you are entitled
to at the date of termination. 2




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
    AOL Mexico may terminate your employment at any time by giving
you 30 days prior written notice (or such longer period as
established in the applicable collective bargaining agreement).
AOL Mexico may pay you the equivalent amount of remuneration in
lieu of notice.  
    You may terminate your employment at any time on 30 days prior
written notice, and AOL Mexico may, in its sole discretion,
restrict your access to AOL Mexico facilities upon receipt of
such notice. Property  
    Upon termination, you will promptly return to AOL Mexico any
of their respective property or any property belonging to any
third party held by you on behalf of AOL Mexico, including but
not limited to motor vehicles, security keys, mobile
telephones, computer or other equipment, documents (in whatever
material form), disks, computer programs, or any other form of
storage media, and all copies of the same. Eduardo, we trust this is in line with your expectations and look forward to the contribution you
can make to AOL. Please acknowledge your acceptance of these terms by signing and returning a copy
of this letter by September 23, 1999 at the latest. Sincerely, AOL Mexico S de R.L. de C.V. By: ________________________________ Name: _______________________________ Title: ________________________________ I accept and agree to all the above terms and conditions: By: /s/ Eduardo Escalante Castillo Date: _______________________________ 3