"Peering into these craters is maybe the trickiest task that the SMART-1 scientists have set themselves. They will look for the infrared signature of water- ice. It will be difficult because no direct light falls in those areas, but rays from nearby crater rims, catching the sunshine, may light the ice sufficiently for SMART-1 instruments to see it."

I don't think this will find lunar ice, though it will provide a new view and might get us wondering. I think it's more likely to see H2O gas rather than H2O ice- assuming either exist in enough quantity and have enough light to see it.
If you are standing in a lunar crater, what will be the greatest source of infrared light (or any energy source which will be converted into infrared light after hit the lunar ground beneath your feet)? Will it come from crater rims or the stars above you?