How do I change a unit's armor class and weapon damage? and, how to disable an addon?

[Necronius]

I'm learning how to mod in Soulstorm with Corsix's Mod Studio, and I've figured out how to change health and build times and all, but I can't find where I can change a unit's armor class and weapon damage against certain armors.
Also, how do I disable an addon to a building? Like, for example, if I'm removing flying units, and I want to disable the IG Marauder Depot, how do I do that? And, how can I edit the mod to make certain units unbuildable (not just grayed out but blanked out entirely)?

[archivist]

attrib->weapon->"weapon name"->area effect->weapon damage->armour damage

attrib->ebps->race->"race name"->structures->"structure name"->addon_ext & spawner_ext

[Necronius]

Thanks! So, if I'm changing a unit's armor from Vehicle Low to Vehicle Medium, where do I change it?

[archivist]

same file where you change health, in type_ext