In order to perform this, you must use the marquee tag.
This was done by using -marquee- as your opening tag and -/marquee- as your closing tag.
(Use the arrow tags to perform this instead of -'s.)
To make it even more creative, you can put a background color to be the bg of your text.
This was done by doing this: -MARQUEE BGCOLOR=[place color here]- then -/MARQUEE-.
Another maquee is the slide marquee.
This was done by doing this: -MARQUEE BEHAVIOR=SLIDE- then -/MARQUEE-.
There are a variety of marquee codes you can use. That you can experiment with on your own. Hope this helped you out alot.
Remember: (Use the arrow tags to perform these codes instead of -'s.)