How do you create a pseudo drive or map a local folder to a pseudo drive in MS Windows?

Suppose, we want a folder (e.g. AutoDrive) to act as a pseudo drive. Now assume "Z:" to be used as Drive Letter, do either of the followings:

Click Start, choose Run and type:
SUBST Z: C:\AutoDrive
then click OK.
or
type "SUBST Z: C:\AutoDrive" at the command prompt without quotes.

Again, to remove the substituted "Z:" drive, follow either of the ways mentioned below:

click Start, choose Run and type:
SUBST Z: /d
or
type "SUBST Z: /d" at the command prompt without quotes.