I've been working on incorporating the BCDEDIT functionality into the PPJoy installer itself. The new installer will detect when it is running on a Vista or Win7 x64 machine with test signing disabled and offer you the option to enable test signing or exit the installer. After enabling test signing the installer will prompt you to reboot the machine before running the installer again.
This will hopefully stem the flood of comments about people not able to use PPJoy on a 64 bit OS. The new installer will also ensure that it is executed as an Administrator to prevent permission issues.
As a side note: programming the BCD store using WMI and COM isn't really all that much fun :-)