Flash pictures and shaking objects

I am fearly new to this forum and site, I was wondering if someone could help me by telling me how to make pictures flash because when i tried it, it didnt come out well…for example take note of how the groups pictures loads www.crunkrecords.com/new/crunknew.html
also when i try to shake objects using motion tween, it comes out to smooth, i wanted a more gutta style to it…help me please