patch 1.6 is out, ive installed the mod to the right folder, but ive seen no chanes, tarkus still has 4 members, either i did something wrong or idk. Steam version btw.

1.6 is a hotfix for multiplayer issues.
It didn't change single player at all, so should make no difference.
Likewise, whether you got game from steam or disk, they both have the same files.

Did you add the "-dev" suffix to the game icon?

I got it to work, i had to remove the other mod i had to get it to work. Great stuff there. How did you edit the squad sizes, ive tried reading the how to's and stuff and i still dont understand it.

Squad members are set in the squad SBPS file.
If you want to give the squad members different equipment you'll need a seperate EBPS file for each loadout.
For example, let's look at the devastator squad.
Originally, there was 1 dev marine EBPS (equipped with a heavy bolter).
Changing the squad to 4 redshirts in the SBPS without changing anything else would give you a 5 man squad, all equipped with heavy bolters.
By creating a couple of additional EBPS files (dev_ML & dev_PC) I gave the additional marines these different weapons.

this is probably a stupid question but how do you put a rar file into the game so this mod works?

You don't!
You unpack the rar & then move the simulation folder that was in the rar into your gameassets/data folder.

yeah i figured that and got it working thanks tho

hmm i tried putting the suffix -dev in the game icon but after that it wont start up daw 2 its on steam ... any help ? :)

got a question... I am runnning on windows XP and I got the mod working, but anytime I fight a boss character (i.e. Gutrencha, SkyKilla, or any boss at the end of a defend mission) I can play the mission all the way to the boss, but the second they appear on the screen it crashes. Any ideas on what I need to change???

where do i add the "-dev" thing? i extracted the modded where it needed to go, but idk where to add the -dev to make the mod work

Right click on DoW2 on your Steam list, click on Properties and then click on Set Launch Options, type in -dev there.