Checking your profile from the moderators side, I don't see where you have anything saved for a sig line.
If using a desktop/laptop computer:
Click on the user cp tab near the top of this page
find the edit signature on the left hand side of the new page and click it,
Put what you want in the sig line text box and make sure to scroll down near the bottom and save changes.
Just to make sure you select the correct box to enter the text, I typed "kilroy was here" to show you. You'll need to take it out.
2011 Flagstaff 831 RLBSS
I used to be addicted to time travel, but that's all in the past now.