>Hi all,
>I need to create an Client application that can send and receive data to/from a server. But this channel must be secure.
>
>I read some of SSL but I have no idea what I need to do to create this kind of applications.
>
>I'm open to any suggestion.
>Thank you very much in advance.

How are you wanting to send the data? SSL is one of the best bets depending on what you need to do. You might want to go to www.verisign.com and read a few of their whitepapers.