EasyBCD works fine, i used it several times. You have here several instructions for dual booting. This is my bcdedit (vista's boot manager), Leo installed on separate hard disk (partition as mbr, efi+mbr, booting via vista boot manager)
C:\>bcdedit

Windows Boot Manager
--------------------
identifier {bootmgr}
device partition=C:
description Windows Boot Manager
locale en-US
inherit {globalsettings}
default {current}
displayorder {current}
{f8cc6ad3-f7a4-11dc-9399-001a4d5dc225}
toolsdisplayorder {memdiag}
timeout 10

Windows Boot Loader
-------------------
identifier {current}
device partition=C:
path \Windows\system32\winload.exe
description Microsoft Windows Vista
locale en-US
inherit {bootloadersettings}
osdevice partition=C:
systemroot \Windows
resumeobject {fdd49e36-f7ec-11dc-8bc4-a0163f97263b}
nx OptIn

Real-mode Boot Sector
---------------------
identifier {f8cc6ad3-f7a4-11dc-9399-001a4d5dc225}
device boot
path \chain0
description "Leopard"

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