Report of Independent Accountants
To the Shareholders and Board of Trustees of
Vanguard Variable Insurance Fund
In planning and performing our audit of the financial statements of
Vanguard Variable Insurance Fund (the "Fund") for the year ended
September 30, 2000 we considered its internal controls, including
control activities for safeguarding securities, in order 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, not to provide assurance on internal control.
The management of the 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 controls. Generally, 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 controls include the safeguarding of assets
against unauthorized acquisition, use or disposition.
Because of inherent limitations in internal control, errors or fraud
may occur and not be detected. Also, projection of any evaluation
of internal control to future periods is subject to the risk that controls
may become inadequate because of changes in conditions or that the
effectiveness of their design and operation 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 internal control components does
not reduce to a relatively low level the risk that misstatements caused
by error 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 and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined
above as of September 30, 2000.
This report is intended solely for the information and use of the Board
of Trustees, management and the Securities and Exchange Commission
and is not intended to be and should not be used by anyone other than
these specified parties.
PRICEWATERHOUSECOOPERS LLP
November 8, 2000
1
2
