You get nikos phone when you start the first mission
Yes after you enter one go to the bottom of the phone menu.
Annihilator Police HelicopterCell Phone Code: 359-555-0100
Unfortunately, there is no two player in GTA 4 if your not playing online. You cant hook up to controllers like you could in GTA San Andreas. But if you mean two players online, than all you have to do is bring up Nikos Phone menu and scroll to Multiplayer.
Yes
You go on the pad on the controler and press up twice and enter on the cell phone a code
Xbox Live is required to play games online. So unfortunately you can not.
to enter a code, you must take out Nikos phone, by pressing the up arrow on your keyboard twice. once to see the contacts and again to call someone. the code(s) you want to enter should and need to be nine (9) digits long. hope i helped.
well when you get xbox live you go on gta iv and put on your phone then go to the menu and click "multiplayer" this lets you do ranked matches or party mode or normal multiplayer
mine does
you cant
yes , but you can't use it