2 questions - button placement and doodad attatchment

My first question is this: When you make a custom unit which can build different things, sometimes the icons for the buildings that can be made begin from the bottom instead of the top. Why is this and can i fix it?

2nd Question: Can you attatch special effects to a unit with a destructible model? I have a tower in my game which is supposed to make no sense, and the model of it is 'Rocking Arthas'. You know, Arthas with the ice guitar. I made an ability that really just serves as an excuse to put effects on him, but i have them currently attatched to origin. In game they don't show up, but when i switch his model to a unit they do. Can someone list the attatchment points for destructibles, if this is even possible?

PS: I looked in tutorials and I couldnt find any listed for destructible.

Question 1

This is all about Art - Button Positions (X,Y).
Just make sure that all buildings that your builder can build have different button positions.

Example

A Townhall has X=0 Y=0
A Farm has X=0 Y=1
A Barrack has X=1 Y=0

You can have up to 3 in any of those value.


Question 2

Don't know.

Oh I see, I thought that those measurements slightly moved the icons... ok thanks. Here's your rep ^_^

As far as attachments, it doesn't matter whether the model was originally for a unit, doodad, spell animation, or whatnot. What matters is whether the model was given the attachment point that you're looking for.
Now, the thing is, most unit models have all the standard attachment points, plus a few every once and a while. A lot of the doodad models don't have these standard attachment points, although some do. Virtually none of the spell animation models have any attachment points, to my knowledge.
I don't know what attachment points the Rockin' Arthas model might have, but you can find out by extracting the model and converting it from .mdx to .mdl, and then opening the model in Notepad and searching it for the attachment points. If you find any, then it has them and they can be used for triggered special effect attachments or ability effects, and if it doesn't, then they cannot.

Gracias Panto...