Sounds like URL rewriting would be best. It should be fairly easy to rewrite something like ...
Code:
/nav/a/b/c/ -> /nav.aspx?location=a/b/c
So, if you're using .NET's interface, you can either use the "User friendly URL's" wizard, or manually set up a rule with the Match URL -> Pattern [using regular expressions] like ...
And an Action -> Rewrite -> Rewrite URL like ...
Code:
nav.aspx?location={R:1}
Then have nav.aspx break the location GET variable apart on the slashes and process accordingly.
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