Deus Ex Alpha

Anyone here who is in the know about C++? Need some help here.

I've made a program that has 3 linked lists operating as stacks, but i was wondering how to go about changing them to FIFO (First In, First Out) instead, if you havn't a clue what i'm talking about just say! If anyone knows how i could do this, lemme know and ill show you the code i've made.

Ta!

If you're using the linked lists from the standard template library, there exist push and pop functions for the begin and the end of the list.
..something like push_front, push_back, pop_front, pop_back.

If you are accessing that lists over multiple threads, the list access operations should be synchronized or the program might crash randomly.