How do I index salvaged directory tree

[Jim Sabatke]

Apparently reconstruct doesn't do this now.  I salvaged a user's 
directory tree from a disk that was going bad, moved to to a new server, 
  and copied the files and directories in.

Now I don't seem to have a way to get at the files through a mail 
client, except for the top level (that indexed fine).  No subdirs show up.

Is there any other way to do this?

TIA,

Jim