Adding OSx86 to Windows Bootloader (GUID)

[crawle]

Hey guys,
after reinstalling OSx86 on my second harddrive with GUID I wanted to add OSx86 (Zeph's Leo 10.5.2 Rev1) to my Windows Bootloader again. But I couldn't get it work with the chain0 file. It says "chain0 error". I think its up to the fact, that I formatted my Leo-HDD to GUID this time. My hole HDD-Config looks like this:

HDD_IDE0: "Windows" on MBR << Boot-HDD and Windows Bootloader
---------------- Windows XP

HDD_IDE1: "Leopard" on GUID << second HDD
---------------- Leopard << wants to be shown in the Windows Bootloader
---------------- Recovery
---------------- Shared

Is there a parallel file to chain0 for GUID-systems or similiar?

Thanks in advance,
-crawle