removing lathe and plaster?

my bathroom walls have 6"x6" ceramic tiles grouted to a lathe and plaster wall.I am going to remove the tiles and lathe and plaster,and replace with insulated gyproc
any ideas on the fastest method of removing tiles and lathe and plaster walls,
Arto, April 2010


done
big hammer and pry bar (and it's lath, not lathe)

Demolition Man, May 2010