Error de escritura??

[Trulala de cordoba]

Hola gente.

Tengo una página web que localmente anda bien y que en el servidor de hosting da error. Me he fijado y mi frameworks y el del hosting es el mismo. Quería saber si tienen idea porque es este error.
Mil gracias

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Exception Details: System.UnauthorizedAccessException: Access to the path "c:\domains\sitex.com.ar\wwwroot\zip\tSharpZipLib. txt" is denied.

ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.

To grant ASP.NET write access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.