" Please allow to introduce myself "

First of all id like to introduce myself, as the title suggests...
Im incuGuS (A.K.A Gus or Gaston ), from Uruguay.
Im new to Warcraft Editing, so i may ask some amateur questions,i just hope you dont mind.
Im sorry if what i ask here is on another thread, but the time i CAN be online is short.
Thanks to all who spend their time reading what i have to say and ask.
Should i write something that looks stupid, its because im a spanish native speaker, and my Warcraft is in spanish.

Questions:
1) How can i make a hero to NOT be able to spend skill points during some time, or how to hide the "Hero Abilities" (red cross button)?

2) I created a hero with the ability to exlode on death (as the goblin sapper) id like to add an animation (a missile death anim to be more exact) to the units that are damaged by the explosion, how can i do that?

Thanks for reading, i value your time as much as i value mine.

1) You can remove skill points from the hero with a trigger when he levels up, but that will only disable the ability to invest skill points, the hero skill menu will still be acessible, and I know of no way to prevent that.

2) The question is, does the ability support effects on units it damages. If it does, then achieving this would require minor work in the object editor. Otherwise, you would have to resort to triggers.

Thanks for your help.

Just so you know, it's "Please allow me to introduce myself". I think you used to have that in there but changed it, I don't exactly remember though so maybe not ^^.