Dart Backboard

The player has 3 darts to use. On the backboard is an array of 36 identical yellow balloons arranged in a 6 by 6 manner. All the balloons occupy the same amount of space on the backboard (1 grid unit, 1/36.) The balloons are all the same size. Behind each balloon is either nothing or a slip of paper representing a credit. One credit will earn the player a small prize. Two credits will earn the player a large prize. There are only two credits in play. The player throws the 3 darts and tries to pop both balloons concealing the two credits. Once a balloon is popped, the player won't throw his dart there (the player is able to throw his dart exactly where he wants it.)

Can someone tell me the probability of :

Getting ONE CREDIT

Getting TWO CREDITS

thank you :O