I know a lot of my fellow atheists/agnostics are up in arms about Bush declaring a day of prayer, but I'm not going to join their chorus.
Just let it go. So, he has asked people to pray. He hasn't ordered anyone to pray. It's not mandatory. Just like people who take offense to the Pledge of Allegiance, ignore it if you must, but don't make such a big deal out of it that you get in the way of people who do not take offense to it.
While I don't pray or even have a God to pray to, I understand what it is like to need faith during terrible times. If this is what comforts people, what makes them feel hope or peace, why would you want to take that away from them?
I'm sure in the past that I've made snide remarks about days of praying, but I guess I've mellowed in my old age. Or maybe I've matured enough to understand the whole different strokes for different folks thing and I can't be bothered to waste my energy ridiculing people for trying to find hope in a chaotic time.
There's a difference between people blaming God for an act of nature or crediting God for saving certain lives over others and people taking comfort in the act of praying together as one voice, in a nation that is made up largely of people who do believe in one God or another. It's not like Bush has ordered everyone to pray to God to smite atheists or Democrats or anyone. It's just prayer and if you do not believe in God or the power of prayer, then how can this possibly bother you? What affect can it have on you to allow people their day or moment of clasped hands and silent devotions? None. None at all.
We all have our ways of finding peace or hope. We meditate or listen to music or sit in the garden or hold our children and we try to find a place that makes us feel warmth or solace or even hope. For you, it's listening to Mozart while drinking green tea. For someone else, it's saying the rosary and asking their God to help those in need.
The fact that our president has called for a day of prayer should be the biggest worry you have. Let it go, already.
Update: Laurence has made a poll so you can vote on which God for me to pray to (he forgot that I have no god before me but Mike Patton)