bad grammar and a bad mouth...

im sorry but there is no way to 'automate' the opening the npc quest screens

the only thing you can do to relieve this is using one of the addons like Multiboxer V2, or Jamba
they have the option of mimicing the choices you make on the main char
so all you need to do is Open up the gossip window of the npc on all characters
and than click trough the turn in options on your main char

good luck, use the search button to find more info about multiboxer v2 or jamba