I use Windows Vista SP2
I was searching for the file I knew existed somewhere on C: drive using Windows Explorer. I started my search from "C:\", drive is not indexed for search. File was not found. Then I searched for the same file name using "dir opends60.lib /s" command (started it in "C:\") and the file was found in subfolder of "Program Files".
Then I pointed Windows Explorer to "C:\Program Files" and searched it - file was found. I detected the same behavior for Windows system folder.
Is this documented somewhere? What are the other folders that are not searched by default? What do you use for search (I am not looking for anything that creates index of any kind)?