You require much more information than just Austria-Hungary for the place of origin of your Polak ancestors. Do you have at least a town, village or province? This surname can be found in Slovenia, [check out the Slovenian telephone directory at: http://tis.telekom.si
for an example]. It my also be located in the Czech and Slovak republics, as well as parts of Poland. Try and narrow down the area of search, otherwise you may waste a lot of time following the wrong people. Hope this helps.