USA, Canada / College Grants or Scholarships in America for being of Polish decent. [14]

How far back can your polish decent be? My sons great grandather came to the State. My mother in law thought I should look into this for my son. He is graduating this year, 2008. and is looking to pursue game art design. Would he qualify for any grants for scholarships?Any information would be great. How could someone with polish decent study for free in Poland?