Can I suggest that for anyone trying to trace their ancestry to the part of Poland that is now the Ukraine that they try teh follwoing site. It is a brilliant site full of history and help.
http://gallery.kresy-siberia.org/
Alternative look through the Forgotten Odyssey website . this too is superb.
My Fathers family was one of the many taken by teh Russians to work in the Camps in Siberia. the stories are incredible and very often full of immense pride .
I am considering starting to look at arranging trips to help families retrace their routes. My Father has done this and found it a truely spiritual moment when visiting the place where he was taken from