A simple search for "kliza" on Yahoo, Google, AltaVista, ... is a simple place to get started and will usually generate a few hits. For example, have you heard of Jozef Kliza? Military records describe Jozef as a soldier who was/is stationed in France. Nancy Gay Kliza endowed a scholarship at Eastern Michigan College.

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Several sites dedicated to Geneolgy are:

Polish Genealogical Society of America
http://members.aol.com/pgsamerica/

www.blah.blah