Rootsweb/Ancestry has added many databases in the past several weeks that include Poland and Polish information. Some of these are added with the cooperation of the JewishGen site, but are not exclusively of Jewish names. If you have an Ancestry subscription and haven't run your Polish surnames through lately, I suggest you try it. Great-uncle Andrew once wrote to me about his brother Feliks Wolniakowski; now I found that Felix appears on the Dachau list on Ancestry, confirming that story.