I'm working...
I've omitted the "macro" session, and I've only a
BIG file with the structure:
<translation><from>English sentence</from><to>Frase in Italiano</to></translation>
I'm a very lazy man... because I'm a programmer

so I'm trying to write a simple piece of code that automatically (google) translate every sentences, and I manually correct only those that need a "human" translation...
If this job will work well, I will be happy to share the source code it with the Nabble community