Do you remember your password at tickerfactory? That's what they call a PIN. If so, all you have to do is go there, sign in, click on the blue box right under where you entered your password/PIN. The box is marked "Edit/Update Weight Data."
For some reason, I always have to enter my PIN a second time, before it will accept the changes I make to my data.
If you have forgotten your PIN, you'll have to start from scratch, as though you had never before had a ticker from their site. According to their FAQ, they can't help with lost PINs because of the way their privacy system works.
Once you have created a ticker, when you get to the last page, you want to highlight and copy the
entire bbc code that they give you. After you've done that, come back to this site and click on User CP on the left end of the lower tool bar. Then, select Edit Signature from the menu you will see on the left. Paste that bbc code into the blank box, then click on the box marked Preview. You may have to scroll up a bit to actually see what your ticker looks like. If you like what you see, go back and click the Save Signature button.