There are some scripts for CharGen at startup i think that sets the players starting location. This script is called "CharGen"
;global character generation script
begin CharGen
;short CharGenState is a global
; 1 = start
; -1 = all done. Set from CharGenDoorExitCaptain. Can save game after that is set
DisablePlayerControls
DisablePlayerJumping
DisablePlayerViewSwitch
DisableVanityMode
DisablePlayerFighting
DisablePlayerMagic
Player->

PositionCell 61,-135, 24, 340, "Imperial Prison Ship"
ChangeWeather "Bitter Coast Region" 1 ;sets beginning weather to cloudy, looks nicer
set CharGenState to 10
stopscript CharGen
end CharGen
-there are some other scripts on the player starting after charGen that refer to the player taking some actions to activate menus and functions ingame. You will have to change the references in this scripts to the references you want to use in your starting location so you can actually play the game proper.