Most ATX case will take a ITX board. Where are you purchasing from?
Newegg, I was going to get the Intel Atom D525MW Mobo/CPU combo, 4GB of So-Dimm 800 Ram, 32GB Sata II SSD. I already Have a Mini itx PSU (80W).
Now I just need to know If I can get away with using th Cheapest Mid Tower ATX case they sell, about $15 US