How'd you do it?

Sorry but I know how to do it in XP but I'm stumped in Vista.

Also, I'm annoyed by how the search seems to work.  When I right-click on a
drive or directory, the search starts immediately with every damn file in the
place I want to search.  Can I stop it from doing that until I select my
search criteria.

Also, files don't seem to be turning up in searches.  I recall seeing a
message near the task bar telling me not all files will show up if they
haven't been indexed.  How do I get the system to search for unindexed files?