Hey, check this thread out -
https://bitcointalk.org/index.php?topic=990345.0 that is where Shorena gave a step by step procedure on how to sign a message. If you are lazy reading, there are pictures in there, just follow it...
Care to share why you have to sign a message? It's unbelievable that at your rank you still don't know how to sign a message..
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
Anyway, good luck...
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
Please lock this thread if the thread that I am pointing already answer your question...