I fully agree that war should be absolutely the last resort for any problem. I just happen to believe that we have reached that point.
If you don't believe that, then I respect your point of view. If you believe there is another way then I agree you should protest against war in Iraq. However, if you haven't even thought through the ramification, if you don't even understand the situation perhaps you should educate yourself before taking a stance.
Evan Coyne Maloney over at brain-terminal.com went out onto the streets of New York City during the peace protest last Saturday and asked those who were vehemently anti-war and, mostly, anti-Bush what they thought the alternative to war was. Many had no answer and those that did were a little wide of reality. The resulting video is not only informative but hilarious.