Passing a variable for bilingual site

I have a whole lot of small flash movies with text. I want to make a site that is bilingual, that is, have the user navigate thru an English version or a French version.

I’ve been told the best way to do this is to create a global variable for the Frech button and another for the English on the opening Flash screen, which is also the parent swf. Then as each movie is loaded I should use an if/then statement to send the user to appropriate frame/s

BUT not sure how to construct the first script. and where to put the if/then script?
and ideas?
max