I think mk4tube is right. It is possible to make a new line with ctl+enter and an enter alone would send the message.
The only problem is to remember where to configure it.
You guys are not talking about different things.
Thanks a lot.
Julio Borges
Rio de Janeiro - Brazil
well, I can't change the shortcut key to ENTER + ENTER, beacuase by pressing the enter key the dialog is closed. And if I check the 'multi key mode' and pressing enter twice, the message was send after pressing the fist enter.