open your cell phone by pressing "up" on the directional pad. Press "up" again to enter code entry mode.
no, you can't
you mean the weather cheat, it's hot-555-0100 i believe. use gta4.net for the hot number if you don't know it.
You are only able to drive it, as the lift will not work.
no
press select a couple of times.
you not allowed to use it stupid all cops chasing you
you cannot use nitrous in the normal gta 4, but you can on TBoGT in a race
there is no hovercraft in gta4
No
they
use gta4.net's interactive map