load iDeneb 1.4(GUID) from Win7 bootloader

Hi guyz,
On 2 seperate hard drives I have

500GB: XP(1st partition) & Windows 7 beta build 7000 (2nd Partition)
80GB: iDeneb 1.4 (OS X 10.5.6) GUID

All working fine, but since I wanna save the hassle of switching hard drives boot priority each time, I want win7 bootloader to load OS X too! but I keep getting boot 1 error using boot0.gpt method which I have earlier successfully done with Kalyway 10.5.2 & XP but somehow it has stopped working now.

I can't get darwin prompt from Win7/vista bootloader or XP bootloader.

Any pointers here ??