I'm setting up a document library that has many, many folders and sub-
folders. One of the features the users desire is the ability to search
only on a specific folder, preferably the one they've just drilled down
to.

Another ideal feature would be to create a breadcrumb trail that works
with the folder structure just as if each folder was a site.

In fact, I've played with the idea of having each "folder" be a site
instead, but I don't want to have the overhead of creating and
maintaing several hundred sites and sub-sites. The doclib folders work
great, if I could just figure out how to limit a search to the current
folder.

I apologize in advance if I've missed a really obvious feature of
MOSS07 that would do what I want.