Restored Factory Settings on Laptop that had BitLocker - Now want to do bitlocker again

So I had a IE issue on my laptop. It was home premium version of vista. I
installed ultimate. I used bitlocker, which creates a 5GB partition.

I had to do a factory restore on the laptop and install all my apps and
SP's. So now I am back with Vista Ultimate SP1. Now, I want to enable bit
locker again, however, will bit locker see this small partition that is on
my disk and use it or will it create a new partition? I hope it can use the
one it created before.

Thanks,
Blake