Auto responder

Hi Guys,

Is there any way to make an auto welcome message to the new sessions (users)?
I mean it would be great if a new visitor come to my site and automaticaly get a welcome message.

For example:
For a new italian visitor:
Benvenuto sulla nostra pagina!

For a new english visitor:
Welcome to our site

....

Have you got any idea for it?
The welcome message can contains some information about using our site and so on.... But only once/session.

The module is absolutely great!

Thnaks for it!
Adam