2. Also interested if it is suite also for multiple languge sites.
I would need to setup at least english and finnish languages.
I might have to define own languge for finnish as that might not be supported directly? Only client side translation needed.
Is it easy to do?

3.
Also wondering if I can have the client side language set according to which language is chousen in zen cart site.

I know php programming so if easy to modify I would take a try.

4. Or should I chouse other "Live Help" application?