Pay a visit to the Los Santos Airport and find a (smaller) airplane, and press the 'Y' button.
if you have a xbox 360 you should press down on the d-pad and it will bring up all the names in multi-player
nowhere, but if you use your phone by pressing up on the dpad, and press the x/a button, you should be able to scroll to multiplayer!
Press UP twice(First to get your phone in the screen, second to bring up the dialing screen.) Then use the arrows to dial the cheat and press the green "call" button.
press select a couple of times.
press o then x then w then y then z
if you have an internet connection, you can play multiplayer online, but you can't play with 2 people on 1 system. if you want to play online, press up on the "D-Pad", then press the "A" button if you are playing the xbox 360 version ("X" if you are playing the ps3 version) then scroll down your phone with the "D-Pad" until you see the multiplayer option highlighted on niko's phone. Select that option with the "A" button if you are playing the Xbox 360 version ("X" button if you are playing the ps3 version) then select the style of multiplayer game you wish to play on, then BAM!!! you're playong multiplayer on GTA4!!
press a , x , b , rt , y , lt , a
You raise and lower the forklift with the left analog button
you can't, only if your buying from little jacob, in which you press lb
press up on the d pad 2 times
If you're talking about the ps3 you can't do two or more players but you can do on line multiplayer if you press up for the phone and then press down till you get to multiplayer .