With Fire and Sword - Henryk Sienkiewicz, W.S. Kuniczak First of a trilogy.

Currently free in kindle format at Amazon: http://www.amazon.com/Sword-Historical-Poland-Russia-ebook/dp/B005HKK7UG/ref=sr_1_1?ie=UTF8&qid=1349849183&sr=8-1&keywords=sienkiewicz

Next in Trilogy is The Deluge.
Third is Pan Michael - An Historical Novel of Poland, the Ukraine, and Turkey

according to : http://en.wikipedia.org/wiki/Henryk_Sienkiewicz

Thanks, Bryn, for helping me with this!