Exception Handling in Wcf

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WCF

hai friendz,
I wrote many services for single project....i want to put exception handling in this services...i wanna to display User Friendly messages..

now i want to use one of the following Exceptions..

System.ArgumentException
System.InvalidOperationException
System.NotImplementedException
System.NotSupportedException
System.ApplicationException

UserService.cs:

public class UserService:IUserService
   {
       /// <summary>
       /// Method to InsertUser
       /// </summary>
       /// <param name="Insertuserrequest"></param>
       /// <returns>InsertUserResponse</returns>
       public InsertUserResponse Insert(InsertUserRequest Insertuserrequest)
       {
           InsertUserResponse Insertuserresponse = null;
           try
           {
               Insertuserresponse = UserBLL.Insert(Insertuserrequest);
           }
           catch (BaseException ex)
           {
               throw new FaultException(ex.Summary);
           }

           return Insertuserresponse;
       }
}

UserBLL.cs:

public class UserBLL
    {
        public static  InsertUserResponse Insert(InsertUserRequest Insertuserrequest)
        {
            InsertUserResponse Insertuserresponse = new InsertUserResponse();
           
            try
            {
                if (Insertuserrequest.user.Password != null)
                {
                    Insertuserrequest.user.Password = EncryptPassword(Insertuserrequest.user.Password);
                    Insertuserresponse = UserRepository.Insert(Insertuserrequest);
                }
                else
                {
                    Insertuserresponse = UserRepository.Insert(Insertuserrequest);
                }
               
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return Insertuserresponse;
        }      
    }

How can i use one of the above exception for this method..

Please help me

Thanks in advance