Windows Vista Technical Boot Problem

I had vista working fine. I installed XP and then ran the vista startup disk to repair the vista bootloader. It loaded fine and I had XP and Vista dual booting fine. A week later, I was trying to get OS X to boot also. I added a entry to the XP bootloader. In case you don't know, the vista boot loader has two options, XP and Vista. Selecting the XP option goes to the XP boot loader, and give you another 30 seconds to chose. I edited this boot loader, adding disk 0, partition 2, where OX X was installed. After selecting it at startup, it went to a black screen and hard hard drive was flashing steadily. It ran about 3 hours, I figured it might be setting up. Then I rebooted, but got a black screen. I then ran Hirens boot CD, and repared the boot loader. This got the XP bootloader to work. I booted into XP and got easyBCD, but that would not run. Any ideas on how to get vista to boot? I ran checkdisk, and vista files seem to still be intact.