Mouse over

I can’t find a basic tutorial on how to do this so here goes.

I want a basic text button. that says “members” on mouse over i want it to show a graphic off to the side and then on click and release i want the same graphic to be there but to also have another txt box open up with txt i will add later. if you could show me the actionscript i need to use that would be very helpfull.

side question,

at the top where it says “—USA------------------------------------” i want a little * to travel along the line and around the usa text followed closely by another…just pointers will do, i do want to learn how to do this