Configuration Error!

hello everybody!
i'm start studying Dot net so i have much difficult. I hope every help me. thank you very much.
please help me overcome this erro




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 23: "Forms", "Passport" and "None"
Line 24: -->
Line 25: <authentication mode="Windows" />
Line 26:
Line 27:

Looks like an error in your Web.Config file - have you been editing it recently?

Post the file and we'll try and find the problem.

DJ

No, there is no error with that file.

If this is on your local computer, or one you have access to, click CONTROL PANEL, ADMINISTRATIVE TOOLS, IIS ADMIN

Go to the default Web site, find the folder for your project
Right Click, go to PROPERTIES

click the CREATE button.

Hit OK.

If this is on a computer that you do not have access to, then either:
Have the person with access do it.
Or
Move your project to the root of the Web server.