Restore bitlocker partition data without correct partition table ?

I installed Vista and encrypted OS-Partition and an additional Data Partition

with bitlocker. After this my OS Partition goes corrupted with bluescreens

etc.

I tryed to repair something but without success. Unfortunately my partition

information seems also lost during my trying to solve the problem. This means

everytime when I try to boot with installation DVD ant type in "diskpart:

list volumes" then I could see Boot Partition, CD-Drive but no bitlocker

partition. The command "Diskpart: list partition" shows the encrypted

bitlocker partitions.

Now I would like to extract my data partition with the Bitlocker Repair Tool

(http://support.microsoft.com/kb/928202), but this does not work because I

have to type in a volume name which lost like described before (Bitlocker

Recovery is available)

My question is there a possibility to edit the partition table in that way,

that Vista boot CD will see or assign volume names to my existing bitlocker

partitions. Or a possibility to mark the existing partitions as bitlocker.

I would like to extract data with bitlocker repair tool but do not know how

to access partition without volume names ? Could anybody help ?