Hi Everett,
as it is late over here, only a very brief answer: in the meantime, ltk-tile has been merged into the main ltk library, if you grab the latest ltk version from: http://ltk.rplay.net/svn/branches/ltk/repl/ltk.lisp you get a ltk which uses the tile widget set by default (assuming you are running tcltk 8.5 or above). The ltktest program contained within ltk.lisp also contains some demo code to switch between the different tile styles on your system - just try running (ltk:ltktest). If you have any more questions, I will gladly answer them tomorrow :)
Peter