there is one problem while I register for making my own server is also impossible for internet players to connect to a machine with no external IP and without port forwarding. If you do not forward ports, that means that the machine running server has an external IP, making it avaliable to internet??

I am very much crazy for this game. but i got so much problem while I play this game. i want some tips for this playing  game. so that I can play this game more smoothly.. I like to driving in this game can i get any car which bulletproof??

These is very good score. but I never seen anyone's score in hax code. but my best score in Gta vice city game is about $3000000  isn't is good ?

How exactly is your local network organized?

Internet - Router - Server_Machine
                 |
           Random_PCs?

If it is organized like the one above, that means that your router has an external IP, not the machine you run VC:MP server on. That would mean you have the port forwarded.