I don't really know how to do that or if it works, or if you need a script for it, sorry if I'm not making myself clear english is not my language =l
You don't need a fancy script if you want to show the same speech bubble every time.
I assume you have a monkey object.
Create a new object. Give it an ID. I called mine "bubble"
Move it to where you want it and give in the bubble you want.
Set it to not visible
On your Monkey object, create a new state. A "Mouse down" one.
Set that to send a message to the Bubble object to "Show"
Create another "Mouse away" state
set that state to send a message "Hide" to bubble.
If you wnat it to change . . well . . that's a script and you'd need to describge what you wanted to do with more detail. 
Done!