Just for the record, Spotlight doesn't search in many system folders - you have to specifically enable it to do so.
Open a Find window (Cmd-F in the Finder)
On the right next to Save you'll see a Plus sign - click it
Click on the Kind menu and go down to System files - check its box and click OK
(This keeps this option as a menu item from now on)
Now, in the Kind menu, select System Files and in the new menu that appears next to it, select "are included"
This will do what Spotlight should always do anyway - it will show you all the search results in areas that Apple thinks you shouldn't be prowling around in.
Might be useful generally....