How do you change the size of the green box that appears when you try to construct a building? How do you change the space the SCV needs to build the building?

i think there isnt a way....
im not a profi-modder, so i cant be sure about that, but i think, that there is no way

That bites. Looks like I'm gonna have to just use a different building for now.

There is, Syphon did it once in the Risk mod.

When Modding Life Gives You Lemons:

http://www.campaigncreations.org/starcraft/stardraft/

An external link to campaigncreations to a more than outdated tool and if you click the link you don't even find anything useful.... nice...

Anyway, sub, have you tried playing with datedit? I believe there's a "placement box" prompt on the staredit tab.
Just select the building and find the options I'm talking about.
Also, you might wanna use only multiples of 32. other numbers might turn up weird I guess.

LOL
Wow. I was messing around with editting the .dat files over and over trying every little thing I could think of
But I never tried the "Staredit" tab because I thought it was only Campaign editor related stuff.
Thanks