Yes it is, there are many topics on this, or use the faq:

http://answers.websitex5.com/post/26661

The intro page is not mandatory, you can also use a link with flags or something on your site. But you have to make to seperate sites / projects.

So if ready and you want to make a change in both languages, you need to update en export two projects....

If you still have questions, let us know.