lol No, I don't. I tried to sign up for one through Register.com a while ago but it didn't give me the option to choose a lot of extensions, .be being one of them. *shrug*
I think twocows or whatever that companies name is sells them. Try doing a google search and im sure you will find lots of sites selling them but I dont reccoment buying them because they arent worth much.
Huh? Switch to the English version (click on the British flag) and then type in your domain name in the little domain thing they have and select .be and then it'll say order free if it's available and then you click on that.