A few years ago, I used an online web application that would produce a
map of a web site showing the linkages from one page to the next. 
There were settings that you could use to limit the depth of the links
or whether you wanted to see the links to other sites.  As I recall,
it was also somewhat 3-dimensional.

I'm looking for a site like that that would do the following:
1) (at a minimum)take any URL and show diagramatically the other pages
on the site with lines connecting the names of pages that are linked;
2) (preferably) allow one to specify the number of clicks away from
the home page to include in the diagram

The visual thesaurus (www.visualthesaurus.com) is a good example of
what the outcome should look like, although the content is entirely
different.

http://tucows.mundofree.com/win2k/preview/70841.html
Site mapper should help :)

Hope it helps