Change it to:
_pick.rhtml
<A HREF="http://example.com/admin/show/<%=pick\.id%>"><IMG SRC="<%= pick.image_url1%>" ALT="" WIDTH=90 HEIGHT=90 BORDER=10 /></A>
The :collection part of the render implies the loop "for pick in @picks" (actuallly, the @picks comes from the :collection and the 'pick' from the :partial).
And you probably should use link_to(image_tag(...), ...) as previously suggested.
-Rob
Rob Biedenharn http://agileconsultingllc.com Rob@AgileConsultingLLC.com Skype: rob.biedenharn