To create the ticker there are places to create them. Dis has some, click on Tickers or DisTickers along the top somewhere. There are other places too, tickerfactory.com vacationcountdown.com. Save the codes that will show up once you have created the ticker.
Once you have created it, Go to near the top left side of this page to User CP. When that page opens down the left side of the page, select something like edit signature (something to do with signature) You enter the code of the ticker that you have into your signature space and press save. It will then be on the bottom of all of your posts