So, here are the abl files (the unit brain files) I have in use. Note, not all work, but most should
http://omnitech.hard-light.net/team/starman/downloads/abl.rarAnd here some crash course how to edit that to a brain file to a unit.
You can edit the brain files easily with a text editor. Note the "fsm" name at the start. In the entire MCO installation are now two brainfiles allowed, that share the same fsdm. So start right, and make logical syntax name, makes it easier for you too (example : m1_unit12_walk)
In the editor, if you open the object editor you notice that each unit has a squad ID. (Note, you can have more than one unit sharing this ID, so you can all assign the same brain, I learned that too late

)
Open your mission.fit file, and search for your object entry. Usually it looks like this (it's only the beginning part I post) :
[Warrior5]
st Profile = "PMWVeteran"
st Brain = "gg_Guard100m"
l NumCells = 3
l NumStaticVars = 0
Note the second line on top starting with "st Brain ". Simply enter there the name of the brain file (the filename, NOT the fsm name, if you make them differently), without the file extension.
Check the brain files, usually the stuff for editing is way on top. Usually you just have to edit squad ID's, waypoints or objective numbers (important, Objective 1 in the editor, is refered to as Objective 0 in the code or brain file, so be sure to count right and don't let it fool you

)