还是不行哦，，求解答，谢谢
Server Error in '/' Application.
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Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.
Source Error:
Line 21: <pages validateRequest="false" enableEventValidation="false" enableViewStateMac="false" viewStateEncryptionMode="Never" />
Line 22: <compilation defaultLanguage="C#" debug="false" />
Line 23: <authentication mode="Forms" />
Line 24: <customErrors mode="Off">
Line 25: <error statusCode="404" redirect="/" />
Source File: e:\freehost\zgzsgc\web\www\web.config Line: 23
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Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433