Object obj;

        synchronized( LOOKUP_TABLE ) {
            if( LOOKUP_TABLE.containsKey( name ) == false ) {
                LOOKUP_TABLE.put( name, name );
                return null;
            }
            while( LOOKUP_TABLE.containsKey( name )) {
                try {
                    LOOKUP_TABLE.wait();
                } catch( InterruptedException e ) {
                }

 * Windows command prompt you can see
 * what names a host registers with the nbtstat command.
 * <p>
 * <blockquote>
 * 
 * <pre>
 * C:\&gt;nbtstat -a 192.168.1.15
 * 
 *        NetBIOS Remote Machine Name Table
 * 
 *    Name               Type         Status
 * ---------------------------------------------
 * JMORRIS2        &lt;00&gt;  UNIQUE      Registered
 * BILLING-NY      &lt;00&gt;  GROUP       Registered