Report of Independent Auditors
To the Shareholders and
Board of Directors of
Dreyfus MidCap Index Fund
In planning and performing our audit of the financial statements of Dreyfus
MidCap Index Fund for the year ended October 31, 2000, we considered its
internal control, including control activities for safeguarding securities,
to determine our auditing procedures for the purpose of expressing our
opinion on the financial statements and to comply with the requirements of
Form N-SAR, and not to provide assurance on internal control.
The management of Dreyfus MidCap Index Fund is responsible for establishing
and maintaining internal control. In fulfilling this responsibility,
estimates and judgments by management are required to assess the expected
benefits and related costs of control. Generally, internal controls that
are relevant to an audit pertain to the entity's objective of preparing
financial statements for external purposes that are fairly presented in
conformity with generally accepted accounting principles. Those internal
controls include the safeguarding of assets against unauthorized
acquisition, use, or disposition.
Because of inherent limitations in internal control, misstatements due to
errors or fraud may occur and not be detected. Also, projections of any
evaluation of internal control to future periods are subject to the risk
that internal control may become inadequate because of changes in
conditions, or that the degree of compliance with the policies or procedures
may deteriorate.
Our consideration of internal control would not necessarily disclose all
matters in internal control that might be material weaknesses under
standards established by the American Institute of Certified Public
Accountants. A material weakness is a condition in which the design or
operation of one or more of the specific internal control components does
not reduce to a relatively low level the risk that errors or fraud in
amounts that would be material in relation to the financial statements being
audited may occur and not be detected within a timely period by employees in
the normal course of performing their assigned functions. However, we noted
no matters involving internal control, including control activities for
safeguarding securities, and its operation that we consider to be material
weaknesses as defined above at October 31, 2000.
This report is intended solely for the information and use of the Board of
Directors and management of Dreyfus MidCap Index Fund, and the Securities
and Exchange Commission and is not intended to be and should not be used by
anyone other than these specified parties.
ERNST & YOUNG LLP
December 7, 2000
