Z:\>C:
C:\>CD S
C:\S\>

Forbidden

You don't have permission to access /dosbox.jpg on this server

Boobies.

HunterZ:
Screen capture is displayed fine for me (using Opera). Probably some issue on the server side.

Works now.

Note that this should also work:
Z:\>CD C:\S
Z:\>C:
C:\S\>

DOS keeps track of the current directory for each drive letter, and you can change it without changing the active drive letter. The important thing to know is that you can't use cd to change the active drive letter itself.