I did a graphical interface for mcmatrix gfxutil.
It´s done quick and dirty with cocoa



features:
• import hex files and plist files.
• copy hex strings to clipboard.
• patch com.apple.Boot.plist with generated string.
• search for device paths.
• integrated plist for nvidia gfx cards, ethernet (aka timemachine fix) and sound.
download:
http://www.mediafire.com/download.php?xz14ytrmddoplease post bugs and and your comments
update: 31.05.08
added: lspci window
added: com.apple.Boot.plist Editor
added: Admin Tools (Repair Permissions etc.)
fix: changed code for patching com.apple.Boot.plist
update: 5.06.08
added: plist manager. you can add your own plist files inside the Programm Bundle.
added: Base64 String Decododing (right click on a base64 string)
added: pc-efi v8 Installer (not active ! i cant try it on my Apple MacPro...)
added: some ATI and Nvidia plists.
update: 20.6.08
added HDEF Audio for P5K and DS3 Users (thanks to sWORDs).
update: 2.3.09
Version 1.1added: EFI Boot Partition Installer
added: new com.apple.Boot.plist Editor
added: new cards: 9800GT 1024MB, 9800GTX+ 512MB
enjoy
inside