Returns a folder using its index or its name from the folder collection.
Parameters:
iIndex
The index or the name of the folder to retrieve from
the collection of folders.
As a numerics, this index is the rank of the folder
in the collection.
The index of the first folder in the collection is 1, and
the index of the last folder is Count.
As a string, it is the name you assigned to the folder using
the