Adding New Units

[Scoryth]

Okay, I've downloaded mods for StarCraft that have new units in it, and I see them. How do I put new units in StarCraft? I don't get it. I even have tried viewing the MPQ file from the mod to learn how to do it and I still can't figure it out? Can someone point me to a step-by-step guide or something? I'd appreciate it, thanks.

EDIT: Darn it, put it in the wrong section. Sorry!

[ForTheSwarm]

Are the units changed or are units added?

If they are changed, then the units.dat file and the stats_txt.tbl file were modified.

If it is a "new" unit, then they probably just added an unused unit to the game.

[Scoryth]

Is that the only way it can be done? Use "unused" units to create new units? (For example a fifth infantry unit for the Terrans)

[KillerKow]

Pretty much. Adding new data to StarCraft is basically not worth doing, so everyone just replaces unused stuff that's already there.

[Twitch6000]

which mods did you look at we can tell you how it was done.