Hi Richard

cd A
if the folder is directly off the folder you are currently located.

  There is a nice program called Directory Lister for Windows that
generates a HTML page with whatever directories you want on a computer.
I use it, along with a search & replace to do most of the grunt work to
create index pages for photos or PDF files.

http://freeware.prv.pl/

ChDir Statement

Changes the current directory or folder.

Syntax

ChDir path

The required path argument is a string expression that identifies which
directory or folder becomes the new default directory or folder. The path
may include the drive. If no drive is specified, ChDir changes the default
directory or folder on the current drive.

Remarks

The ChDir statement changes the default directory but not the default drive.
For example, if the default drive is C, the following statement changes the
default directory on drive D, but C remains the default drive:

ChDir "D:\TMP"

Here are a couple of links that may help you in the future as you're working
in command line mode:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/n
tcmds.mspx?mfr=true
and
http://www.computerhope.com/msdos.htm

You could use:

C:\>DIR A\*.*

to get a directory of the folder without actually changing to it,

or you could use

C:\>CD A

To switch to the A folder (the prompt would then be C:\A>)

And then just plain "DIR"