PSPDosBox help!

Alright, so I have DosBox and dos navigator on my PSP, and I'm trying to run Masters of Orion. (An old 4x game)

So I put this into a bat. file:

@ECHO OFF

INPUTMAP up up
INPUTMAP down down
INPUTMAP right right
INPUTMAP left left

INPUTMAP square f6
INPUTMAP circle enter
INPUTMAP triangle f8
INPUTMAP cross lshift

INPUTMAP rtrigger f2
INPUTMAP ltrigger f3


INPUTMAP select esc
INPUTMAP start space

INPUTMAP exec ORION

And tried to run it, and it told me I needed to run "ORION.EXE".
so I added the .EXE, and still the same thing,
Tried adding the "", and still nothing.

So I tried replacing

INPUTMAP exec ORION.EXE

with

@start "MS_ROOT\dosbox\Games\moo\ORION.EXE"

And it started the game, but it ignored my button changes so I still couldn't play.

Any ideas on what I need to do?

And also, how do you change frameskip settings?

Thanks in advance

P.S I'm also assuming that "lshift" is left click on the mouse. If not, what is?
Oh, and it won't let me start the game unless I disable sound and mouse and set to keyboard only in the Hardware Configuration. Any ideas on what i need to do to fix all of this?

And I'm running cfw 5.50 GEN D3.