COOPNET - program that enables people from all around the world to gather and play various games toghether, in this case fallout tactics;)

Hamachi - another program used mainly by people who had problems with their ports blocked. It helped many people start their adventure with ft; you have to find room names and passwords to contact with people, not so popular any more

Game Ranger - similar to coopnet, it enables people to gather in rooms, chat, and kick ass; currently the most popular program from this list

 

Programs listed above will get you an inch closer to finding other players