Permissions for web services

Last year, I've built rhe website www.obsbo.com. It is hosted by godaddy ant it uses a SQL Server Database.

Last week, I've created a virtual directory fot a web service (excelservices.obsbo.com).
J'ai créé un répertoire virtuel pour placer un web service.

On my local computer (Visual studio 2010 express, c sharp, Framework 3.5), no problem!

I've published my web service and come a lot of problems. When I've to write in a file or in a the database, I've different error messages

I've modified the web.config file with Trust Level = fullBut Godaddy doesn't like it! I've tried to use the impersonate.

Examples of errors

SecurityException: Request for the permission of type

System.Web.AspNetHostingPermission

Request for the permission of type

System.security.permissions.FileIOPermission

I've also tried to use

FileIOPermission filePerm = new FileIOPermission(FileIOPermissionAccess.Read, "chemin physique du fichier et nom du fichier");
filePerm.Assert(); 

Can you help me?

Thanks

Tags: ASP.NET, Web.config