Hi Leah,
That's not a silly question at all

You should go to your FF and create a ticker. Just click on ticker, and there you can customize it the way you like it. It will give you a URL for the ticker when you're done. Then you go to your USer CP and edit signature. First click on one the of icons that's kind of yellow and looks like a postcard, with a mountain-like feature lol I hope that makes sense. It will come up with another window telling you to put in your URL in the box. So put your ticker URL there, click ok and save your signature. I hope that works, let us know if it doesn't