Hi saykhoon,
You have been asking questions repeatedly about GPS etc for quite a while and I am wondering if you are making any progress at all.
In an earlier reply I posted a bunch of hints that should have helped but I am not sure if you saw them.
I usually do not do this but becuase you have been so persitant about this GPS topic I may be able to help out.
I just wrote an application about 5 months ago that monitors, displays and logs a GPS feed along with other NEMA feeds if desired. It even supports an interface to "The Capn'n" navigation software to allow you use comercially availalbe navigational charts at the same time.
WARNING! SHAMELESS SALES PITCH TO FOLLOW:
If you are interested in purchasing the source code, contact me off list at
bar@dsautomation.com
END OF SALES PITCH:
But like I said earlier, I already gave you a buuch of hints.
Trying to help,
Ben