@Sabz5150,
Now, you said you wanted to learn something... so here you go.
How was Pallie's email hacked? Simple. Yahoo allows password changes by answering "challenge" questions. It's great if you forget your password/etc.
Palin's challenge questions were:
(1) Her home ZIP code
(2) Her birthdate
I don't think it takes a rocket scientist to figure either one of those out. A quick run to Wikipedia's page about Palin and a google search for "Wasilla zip code" turns up both answers in a matter of seconds.
This is one of the places where the user becomes the weak link in security. The same thing apparently happened to Paris Hilton when one of her email challenge questions was the name of her dog. Again, anybody with two brain cells to rub together could get that instantly.
If you're worried about stuff like this, change your challenge answers to something WAY out there. If it wants you to fill in what city you were born in, tell it "Jupiter". Favorite color? Ultraviolet. So on and so forth.
Might I say this: This "hack" was not political. There is no "liberal conspiracy" (sorry Drnaline) at work here. The person/group/affiliation known as Anonymous does this stuff for pure sh!ts and giggles. These are the same guys that constantly ripped into the Church of Scientology. Like I said, pure laughs and nothing more. In fact, it was another user on the board where this was initially posted that locked the account with a new password and informed Pallie.
Being a hacker/cracker is 50% what you know about computer systems and 50% what you know about the people sitting behind them.