谢谢apple大哥指教，虚拟主机已设置为2.0了，但是又出来问题了，如下：
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 67: </buildProviders>
Line 68: </compilation>
Line 69: <authentication mode="Forms" />
Line 70: <customErrors mode="Off">
Line 71: <error statusCode="404" redirect="/" />
Source File: d:\freehost\dzdqsc\web\pageadmin\web.config Line: 69
Show Additional Configuration Errors:
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. (d:\freehost\dzdqsc\web\pageadmin\web.config line 73)
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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
这个怎么解决，谢谢。