I've argued this argument before and I'm not interested in another back-and-forth snarl-fest. The problem is inherent in the two party system, and simply starting a third party, or a fourth, fifth, sixth, etc., is not going to solve the problem, especially when those "alternatives" to the Republican and Democratic parties will never garner more that a few percentage points of the overall vote.
There is plenty of history to support what I say, and anyone who managed to stay awake in high school American history classes ought to know this.
Other than a complete overhaul of our electoral system, to the extent of a few Constitutional amendments, I see no solution other than the one that Thom Hartmann advocated in an article published in March 24, 2003. It's a good breakdown of the whole problem, and an explanation of how to go about altering the situation for the better. I've posted links to this several times before, but I could tell from the responses I got that damned few people bothered to read it, and some of those who did read it didn't grasp the concepts, probably because they were hell-bent on there own agendas.
So, in the spirit of "hope springs eternal," I'll post it again.