RSS feed showing more items at once


We want to show 3 items at once of an RSS newsfeed on the screen. After 10 secs the next items (eg 4, 5 and 6) need to be displayed etc.
The standard items will be used , Media, Description and Title.
Can anybody give some hints how we can achieve this? We know this can be done with the HTML/CSS, but don;t understand how we can set up this (Also with the overlay (text over a picture in the Ticker, view. Is there any info on this? Cannot find any info.

Thank you very much