hi, when you look above the ticker (like mine) you see tickerfactory.com; you can click on that and it will bring you to their website. There are choices about what kind of ticker you want - i.e. vacations. Choose what you want, choose background (hit next), choose slider (or whatever it's called - click next) and you'll end up with two code boxes. Highlight the code for "message boards" - you can click in the box, right click and choose "select all" ctrl-c or "copy" and then in your signature ctrl-v or "paste". The key is to get the code from the ticker factory. Hope this isn't too confusing!
I followed the instructions from lindsmom, and it worked perfectly. Once you've gone as far as "select all" and "crtl-c", go back to the DIS board, click on "User CP" in the dark blue strip near the top, and then click on "edit signature" on the left side. When the edit box comes up, click in the box, then do the "crtl-v" to paste the ticker into your signature.