thalio is this what you are talking about? <A HREF="http://www.nature.com/nrg/journal/v2/n2/animation/nrg0201_110a_swf_MEDIA1.html" target="_new">http://www.nature.com/nrg/journal/v2/n2/animation/nrg0201_110a_swf_MEDIA1.html</A> <A HREF="http://www.ambion.com/techlib/hottopics/rnai/rnai_may2002_3.html" target="_new">http://www.ambion.com/techlib/hottopics/rnai/rnai_may2002_3.html</A> <A HREF="http://www.jic.bbsrc.ac.uk/staff/andy-maule/ptgs.htm" target="_new">http://www.jic.bbsrc.ac.uk/staff/andy-maule/ptgs.htm</A> <A HREF="http://www.science.uwaterloo.ca/course_notes/biology/biol428/silencing.html" target="_new">http://www.science.uwaterloo.ca/course_notes/biology/biol428/silencing.html</A> <A HREF="http://opbs.okstate.edu/~melcher/MG/MGW3/MG3332.html" target="_new">http://opbs.okstate.edu/~melcher/MG/MGW3/MG3332.html</A> <A HREF="http://www.faseb.org/genetics/dros01/html/f243.htm" target="_new">http://www.faseb.org/genetics/dros01/html/f243.htm</A> <A HREF="http://www.intl-pag.org/10/abstracts/PAGX_W263.html" target="_new">http://www.intl-pag.org/10/abstracts/PAGX_W263.html</A>