Please Help me on how to make my list box function in vb6.....what's the code to use that whenever I'm going to select the choices in the list it will function accordingly..

Add list box to form.
Double click it. (makes code window appear with default event for list box).
Type in the controls name and then the period symbol ".".
A list will/should pop up. Select the AddItem method and press F1.
Read about it in help.
Now select something else and press F1
Review the list of properties and methods and see if there is something like selected that you can read about.

Good Luck