Problem: populating listbox items

3 listboxes, 1 txtbox and 1 cmdbtn.

listbox1 contains PLAYERS name
listbox2 is for TEAM name for the players
listbox3 is for PLAYERS name of the particular team name selected on listbox2

Among all listboxes, only listbox1 is multi-select.

Now what i require is...
Upon selection in listbox1 for the number of players, 1 team name is accepted by the user from txtbox. On clicking cmdbtn, team name is added in listbox2 and its player names selected in listbox1 are added in listbox3.

On selecting team name in listbox2, it must show players name in listbox3 of only particular team name selected.

Pl.note:
1- listbox2 must not accept duplicate name for creating team name.
2- It must only accept to generate team only if user select players in listbox1.
3- It must not accept if any selection in listbox1 matches any players in listbox3 of already created teams.

is my problem is too complicated or too lengthy to solve??

giving alternate solution would be helpful..