How do you add info under small black line in the posts? ie

Go to the top left (blue band) click "User CP" , then click "edit signature"
:thumbsup:

To add further. Once you have edited your signature, you need to click on the the box under miscellaneous options next to show your signature. Then it will show up in any post you make. (I took care of it for you)

BTW Bart the IMG tags do not work in signatures. You can only use links.