Probably the same thing it does in all the other versions of GTA. It's a shop you pull into and they repaint and repair your car. Handy for when your car is about to fall apart or the cops are after you.
There are only Pay & Spray shops in GTA IV, all marked on the map as the islands become accessible.
NO
Yes But No Parachute.
NO! never!
Annihilator
Under the bridge
Yes
You can fly helicopters.
press r3
It came out and is very popular
Place the disk in your PC and Continue from there
there is no cheat you get it in a mission