I don't know if someone already did this or not but I got shadowbox working with my site and I wanted to share the fast plugin edit I did off of thickbox
http://lancebaker.me/shadowplug.zip
in index.php I just put
plug:front_lib_js />
plug:front_dyn_js />
close together don't know if it helps or not.
I just downloaded shadowbox and put the whole shadowbox folder into /ndxz-studio/site/js/
then just put the shadowbox CSS and resources folder into
/ndxz-studio/site/css/
I'm not a pro or anything this was done really fast I just love shadowbox and indexhibit