Make a new movie clip of the rotating ball effect you wish to have on the roll-over. Then in your button symbol, put this movie into the "Over" keyframe.

If you make the original soccer ball a normal graphic symbol you can use it for the movie clip and put it in the "Up" state too!

Easy

-- Leto
<EMBED src="/cgi-bin/ubb/Members/sigs/00000302.swf" quality=high WIDTH=400 HEIGHT=80 TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"> </EMBED>