hi and thanks for your great work
can be this done please ? 2 languages at the same time without switching, i dont wanna use joomfish or something like, just i want the site to show 2 languages at the same time.
can be this be done with joomla international please ?

Sure, in the content you can have any text in many languages as you wish just like this, или как этот текст, and that

hi again and so many thanks for your support
its possible to have arabic and french at the some time ? do i need to install these languages ? also i have an old sql data which is latin , its possible to convert it to utf-8 and then query it to the new joomla database ? if yes how please ?
so many thanks

You can just go ahead and put your arabic and french at the same time in the intro or main text field of a content. Your content will be regarded as English (or whatever default language you have) - UTF-8 content.

You have to install languages only to switch them with Joomfish.

Why don't you just go ahead and give it a try, then let us know of your website. We'll take a look.

hi
thanks again, the problem now is with the old sql, is there a way to convert it from latin to utf-8 ? or i will need to repost everything ?

Well, I am not really sure how to convert latin to utf-8, but I have an idea. I think you can try and modify your extising tables (but make sure to back-up first) and convert them to UTF-8. Check out this link, it has some information on UTF-8 tables. http://is2.xspaces.org/2004/11/28/mysql-and-utf8