Here's something from their official site
Official Site of the Arizona Cardinals
And this is from a conference call with Ken Whisenhunt
"On if quarterback Kurt Warner will play this week:
"There is a possibility. He went out today and tried to do some things. We have to try to figure out what he can and can't do and if we can get the stabilization of his elbow right. I think if we can find something, we will know a little bit more about that later in the week, but he is going to try and play. Once again we just have to see if we can work with something that can stabilize his elbow with the handoffs and some other things. I am optimistic that maybe he can play but until we get through the week I don't know for sure."
Cardiinals Conference Calls