Hi JMD, thanks for taking the time to reply!
This is frustrating.... I made the change, and it did EXACTLY what I wanted it to, it hid the command window.
The only problem is that when I press Escape to come out of the game that loads, and back into mGalaxy, Mame crashes and does not exit.
I'll show you what I changed, and maybe you can let me know if something is wrong:
<Emulator name="MAME" hidden="true">
<Systems>
<System name="Arcade" option="" script="false" cmd="-rompath "%path" %file%ext -volume -%volume(32,0) -skip_gameinfo -nowindow -joystick" extensions="zip|7z|chd"/>
<System name="Capcom CPS-1" option="" script="false" cmd="-rompath "%path" %file%ext -volume -%volume(32,0) -skip_gameinfo -nowindow -joystick" extensions="zip|7z|chd"/>
<System name="Capcom CPS-2" option="" script="false" cmd="-rompath "%path" %file%ext -volume -%volume(32,0) -skip_gameinfo -nowindow -joystick" extensions="zip|7z|chd"/>
<System name="Capcom CPS-3" option="" script="false" cmd="-rompath "%path" %file%ext -volume -%volume(32,0) -skip_gameinfo -nowindow -joystick" extensions="zip|7z|chd"/>
</Systems>
<Requirement>None</Requirement>
</Emulator>