I do not know how to integrate the attract-mode with rocketlauncher, could you help me?
Everything you need to integrate can be found here
http://forum.attractmode.org/index.php?topic=858.0. The download has a readme file that explains how to do it.
You'll use the AM plugins in the zip file but you don't need to use the RL (RocketLauncher) and RLUI (RocketLauncherUI) plugins in the zip file. These are now built into RocketLauncher which is mentioned in this thread
http://www.rlauncher.com/forum/showthread.php?1167-AttractMode-Frontend-Plugin/page2.
The integration isn't too hard. Setting up RocketLauncher itself will we a larger task but has it some really cool features. Once you have RL setup it's easy to integrate with any FE.
You can see the RocketLauncher features here
http://www.rlauncher.com/wiki/index.php?title=Main_Page but you really need to experience them first hand. Just the Pause Menu while you're playing gives you access to the manuals, walk through guides, additional artwork like control panels, onscreen save states with pictures, hi-scores for mame, special per fighter moves for games like Mortal Kombat, etc.