One way is to build your site with multiple Publisher files. Create the
second, and third language versions with second and third Publisher files,
and upload each to subfolders on your host for your other language versions,
and cross link between the versions. Here is an example of a Spanish and
English version of a Publisher built website: http://www.somoscapazes.org/ 
where the primary site is in Spanish, and the second language is built with
a second Publisher file, and then uploaded to a subfolder "english". Just
click on the "English" link in the upper left corner of the default Spanish
version (http://www.somoscapazes.org/english/index.htm), and "Espanol" on
the English version. You would just create two subfolders to contain your
other language versions.

DavidF