Hello
the change have to be done to the menu_1024_768.ini file.
I guess there´s already a mod out there for that here in the mod section:
http://www.subsim.com/phpBB/viewtopic.php?t=30638
but you can do it easy for yourself with notepad if you prefer.
maybe you´d like to give RUB a try, it´s a huge mod for a more realistic game experience. The crosshair is removed in RUB as well
as the hull integrity meter.
http://beerymod.com/