to answer you questions

1: the stacks docklet is a plugin made for rocketdock but it works on objectdock also
2: im on XP Professional 64bit
3: heres my pack it contains:
Rocketdock/Objectdock Stacks Plugin
squee's rocketdock skin and icons (thanks to mythos for adding 5 new ones preview on his entry)
and an objectdock smzip file containing the theme and icons packaged (new 5 need to be added manually)

http://www.sendspace.com/file/pf5rvf