Plesk y errores ASP

[Shaka]

Hola, Yo uso PLESK en un servidor dedicado windows 2003.
Como puedo configurar el PLESK para que ante un error 500 de servidor me muestre el mensaje de error del servidor en el browser en lugar de:

"Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator to inform of the time the error occurred and of anything you might have done that may have caused the error.

More information about this error may be available in the server error log.



--------------------------------------------------------------------------------
"
Muchas Gracias