1. Get WebKitLauncher from here: http://vasi.webhop.org/files/safari3/WebKit.zip
   Or build it yourself, instructions are at the bottom.


2. Get the Safari 3 parts for WebKit to use:
   A. Download Safari 3 beta, mount the disk image
   B. Make sure WebKit.app from WebKitLauncher is on your desktop
   
   C. Extract the bits we need into WebKit.app, by running this at the terminal:
        /bin/mkdir ~/Desktop/Safari3 && cd ~/Desktop/Safari3
        /bin/pax -rz -pp -f /Volumes/Safari\ 3\ Beta/Safari3Beta.pkg/Contents/Resources/Safari3Beta.pax.gz
        /bin/mv ./System/Library/Frameworks/WebKit.framework/Frameworks/* ../WebKit.app/Contents/Resources/
        /bin/mv ./System/Library/*Frameworks/* ../WebKit.app/Contents/Resources/
        /bin/mv ./Applications/* ../WebKit.app/Contents/Resources/
        cd .. && rm -r Safari3
   
   D. Unmount and trash the Safari 3 disk image, and move WebKit.app wherever
      you like: "/Applications/Safari 3.app" works for me.


3. (optional) Make sure your plugins won't interfere with Safari 3
   A. Make a plist (Property List Editor is the easiest way), and add to it
      one of the following two items:
      
      i. NSUseCocoaInputServers (Boolean)
          If set to 'NO', disables all plugins (InputManagers) while
          running Safari 3.
      
      ii. NSDisabledInputManagers (Array of strings)
          A list of plugins to disable while running Safari 3, for
          example 'Saft', 'Sogudi', etc.
   
   B. Save as ~/Library/Preferences/Safari3.plist



Appendix - Building WebKitLauncher manually
   A. Install SVN (from fink, MacPorts, http://homepage.mac.com/hiirem/svkbuilds.html, ...)
   
   B. Checkout WKL source
        svn co http://svn.webkit.org/repository/webkit/trunk/WebKitTools/WebKitLauncher
   
   C. Patch it for Safari 3, InputManager hack, and universal binary:
        cd WebKitLauncher
        /usr/bin/curl -L http://vasi.webhop.org/files/safari3/Safari3.patch | /usr/bin/patch -p0
   
   D. Build it
        /usr/bin/xcodebuild -target WebKit -configuration Release
   
   E. Now WebKit.app is in ./build/Release/WebKit.app, you can get rid of
      everything else.