Random Hotspot location

[SupermanSlyr at aol.com]

I'm sure this is easier than I think, but I seem to be having some  trouble. 
I have a relatively simple program in mind. Imagine an image with  multiple 
hot spots that have been labeled with letters. I desire to make a  program with 
an image pointer that randomly selects a word or phrase from a text  file, and 
then spells it out on the image where the corresponding letters are on  the 
background image. So, to clarify there are two images: one image is the  
background (The one with all the letters), the second is the pointer image  (Which 
points to the letter). Think of an Ouija board (Only without the board).  I'd 
also like to move the pointer around and select random letters. Maybe it's  the 
random stuff that keeps throwing me off. What's so frustrating is I know  
it's possible. And it genuinely sounds very simple. What would be the best way  
to define the hot spots on the image? And how can I get the random moving  
pointer to work right? Any thoughts, pointers, or assistance on this project  will 
be greatly appreciated.