simply what you need to do is the following
you can install you MCE on the drive , once that done you may try to create new partition using (partition magic ) what so ever and make sure that partition that you create is logical (do not every create primary) because that will ruined your life.
install windows vista on the partition you create(the logical partition)
windows vista have very easy and silly GUI , so you do not need any experience for pointing the logical dive to install windows vista on it