RMI!Exceptions!SOS

people my problem is explianed in detail below.

//the remote interface:

import java.rmi.*;
public interface inter extends Remote
{String get(String msg) throws RemoteException;}

//this compiles fine and i have saved it in my server directory.

server programming:

import java.rmi.*;
import java.rmi.server.*;
public class serve extends UnicastRemoteObject implements inter
{public serve() throws RemoteException
{super();}

public String get(String msg) throws RemoteExeption{return(msg);}

public static void main(String s[])
{System.setSecurityManager(new RMISecurityManager());
try{serve si= serve();
Naming.rebind("what?',s1);
System.out.println("i'm registered");}
catch(Exception e)
{System.out.println("error");}
}
}

//the above program compiles fine but while running gives me the "error"
output
.(my client side program runs fine)
//by placing various System.out.println statements i could deduce that the
problem is arisisng when i am intantiating the object of serve i.e. it throws
a RemoteException...why?

help required.