Questions about uploading ASP.net 2.0 website

I put my asp.net 2.0 Web site folder uploaded to the server, access to the browser with the exception:

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Configuration error
Description: An error occurred while processing the configuration file required to provide services to the request. Please check the specific error details below
and modify the configuration file appropriately.

Parser Error Message: Use registered as allowdefinition= ' Machinetoapplica outside the application level
The tion ' section is wrong. This error may be caused if the virtual directory is not configured as an application in IIS
。
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Workaround: Modify the folder of the server on which the Web site resides to a virtual directory.