There is some god-awful long directory name - lets say c:\this is a god-awful directory - to change to that directory you could type

C:> cd c:\this is a god-awful directory or you could type C:> cd c:\this*. The commandline use of wildcards can greatly ease navigation under Windows NT.

Win9x can create directory names/file names with spaces but then they have to enclose the name in quotes to keep the space from terminating the command. This discourages using the command-line. Spaces are OK in NT at command-line:

C:> type c:\data\this file rather than C:> type c:\data\"this file"