Adding items from one listbox to another depending on what the listbox item contains

[ShuggieBear]

hi, i have 3 listboxes. one contains all of the items and i want to add specific items to another listbox depending on what the item contains

so for example
in listbox one it contains all of the seats for a concert
i want the seats ranging from A to C to be added to listbox two and so on

im new to vb, please help

thanks