Hey
Easy questions, I was there once too.
#1 ~ Place a trigger, make it activated by west (Or whatever you are) and put this into the activation field,
Unitname SideChat "Blah Blah Blah.."
Where unitname, put the name of the unit you want to activate it by, where "blahblahbah" type you message.
#2 ~ press F6, double click somewhere on the map, and to the left of the manu screen, there should be rectangle Ellips
Click ellips (However it's spelt)
#3 ~ umm.....need to make your question bit more clear, I know how to make someone die if they enter a trigger,
This setdammage 1
So, if that helps, make a box using 4 triggers tat have that in their activation feild.
O Neil
PS: regarding #1 ~ to use GlobalChat (Where you can listen in on enemy radio conversations, type
Unitname GlabalChat "Blah Blah Blah"
Comes up white