thanks to Cronos for most of these cool graphics:
http://www.public.iastate.edu/~cfford/Indoeuropean%20language%20family%20tree.jpg
http://www.chass.utoronto.ca/~cpercy/hell/images/indoeuro.jpg
http://www.bartleby.com/61/JPG/tree.jpg
http://www.sciencenews.org/20020525/a1685_1903.jpg
Very interesting graphics. Who spoke Celtic Manx ?