help in making a program

Question

Here is the GUI:

[URL=http://img403.imageshack.us/my.php?image=guessawordjo5.jpg][IMG]http://img403.imageshack.us/img403/4409/guessawordjo5.th.jpg[/IMG][/URL]


I am making a program, same as hang man, a word guessing game.

This program is for the player to guess a word consists of 4 alphabets.
When the player guess correctly, a '0' will show in the list box with the correct position of the word.
When the player guess wrongly, a 'X' will show in the list box with the correct position of the word.
When the player guess correctly the word, a message will appear tellin the player the number of tries.