Hivatalok:

Information System of Hungarian National Assembly:
http://www.mkogy.hu/

Association of Hungarians living abroad:
http://www.htmh.hu/

Hungarian Embassies:
http://www.meh.hu/kum/egyeb/kepvisel.htm

The US Embassy in Hungary:
http://www.usis.hu/emb.htm

United States Immigration and
Naturalisaton service:
http://www.ins.usdoj.gov/

The Immigration Home Page:
http://www.lawcom.com/immigration/

Immigration Software in Hungarian:
http://www.theodora.com/magyar.html