I know the description was a little vague.
Anyway, this was the closest thing I could find after searching for a while...
http://www.billybussey.com/
if you hover over the blue logo in the center you'll notice a little text box floating around after the mouse pointer as long as it's in the 'hit area'.
I would like to be able to do the same thing with a smaller zone and with a different image....(I trust they're pretty interchangable). I figured it would just be the code to define the area for the rollover and rollout and what image to bring up in the event the user performs the action.
Is there a good place with a tutorial on this kind of stuff?