Active Directory authentication issue with ASP.NET & IIS

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I have IIS5, ActiveDirectory, fileserver on 3 different boxes all
WINDOWS 2000 Enterprise.

Trying to authenticate users on AD to access files on fileserver using
ASP.NET from IIS5
Successfully can log to asp.net pages on IIS with proper AD user
credentials but unable to access fileserver folder called "ROCK"

<impersonation = "True">
<authentication ="windows">
IIS Virtual directory uses "Integrated" mode of authentication
Denies Anonymous users


I did do the folder ROCK (IUS & IWAM accounts) permissions for
fullrights on the folder.

I Get this error...any help is greatly appreciated


Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.UnauthorizedAccessException: Access to the
path "\\fileserver\ROCK" is denied.

ASP.NET is not authorized to access the requested resource. Consider
granting access rights to the resource to the ASP.NET request identity.
ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS
5 or Network Service on IIS 6) that is used if the application is not
impersonating. If the application is impersonating via <identity
impersonate="true"/>, the identity will be the anonymous user
(typically IUSR_MACHINENAME) or the authenticated request user.

To grant ASP.NET write access to a file, right-click the file in
Explorer, choose "Properties" and select the Security tab. Click "Add"
to add the appropriate user or group. Highlight the ASP.NET account,
and check the boxes for the desired access

.

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