"Mount snapshot into NTFS directory"! Would/could someone please explain

the benefit/use of this option? Thank You!

Snapshots are mounted into unused drive such as Y or Z by default. If you have used up all drive letter from C to Z. You can not mount successfully unless specify a ntfs directory as mountpoint. Another benefit is that, the new drive created by default mount is in current user’s view, this may cause access error when you switch user in Vista or Win7.

When you say directory, do you mean to a specific folder that you have created just for this?