If you want to make hidden files show up in Finder, you can open up a Terminal window and run these two commands:
defaults write com.apple.Finder AppleShowAllFiles TRUE
killall Finder && open /System/Library/CoreServices/Finder.app
killall Finder && open /System/Library/CoreServices/Finder.app
Swap TRUE with FALSE to hide them again. The second line kills and relaunches Finder.
