Using utm_odometry_node to convert GPS mesurement to obtain x y coordinates

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I'm Jurica, student at Faculty of Electrical Engineering and Computing (FER). I use ROS CTurtle (instaled in VirtualBox) and I wish to use utm_odometry_node(in gps_common package) to convert GPS latitude and longitude in (x y) coordinates.

I need convert these measurement because I will use them with odometry in EKF for robot localization in outdoor environment.

Except latitude and longitude (which i want to convert) I would use Direction(from north) and HDOP factor.(i use old msgs:gps_common/GPSStatus and gps_common/GPSFix)

So i read problem in gpsd_client tutorials(http://answers.ros.org/question/82/problem-in-gpsd_client-tutorials)and I was modified code explained there:

#include"ros/ros.h"
#include<iostream>
#include<gps_common/GPSFix.h>
#include<gps_common/GPSStatus.h>
using namespace gps_common; // in original ansewr namespace is missing so code don't work

void callback(const gps_common::GPSFix::ConstPtr &msg){ // instead &msg there can be &fix
//  if(msg->status.status == GPSStatus::STATUS_NO_FIX){
//    std::cout <<"Unable to get a fix on the location." << std::endl;
//    return;
//  }
     std::cout << "Current Latutide:" << msg->latitude << std::endl;
     std::cout << "Current Longitude:" << msg->longitude << std::endl;
     std::cout << "Current Altitude:" << msg->altitude << std::endl;
     std::cout << "Direction(from north):" << msg->track << std::endl;
     std::cout << "HDOP:" << msg->hdop << std::endl;
     //std::cout << "Status:" << msg->status.status << std::endl;
     //std::cout << "Service:" << msg->status.service << std::endl;
}

int main(int argc, char **argv) {
  ros::init(argc,argv,"gps_subscriber");
  ros::NodeHandle nh;
  ros::Subscriber gps_sub=nh.subscribe("fix",1,callback);
  ros::spin();
  return 0;

}

So i ask if i can change utm_odometry_node somehow to use instead sensor_msgs/NavSatStatus and sensor_msgs/NavSatFix old msg tpye: gps_common/GPSStatus and gps_common/GPSFix. Old msg type have HDOP and Direction information and new don't have. (I use LS20030(USB interface) MTK Smart Antenna GPS reciever(http://www.locosystech.com/product.php?zln=en&id=20)). Well if someone have some useful information i would be greatfull.