can't set up i.p???

I can't set up an i.p. address in the Router or firewall without this error in the Command Prompt...

How do I fix it???

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved
C:\Users\My Name>ipconfig /all
'ipconfig' is not reconized as an internal or external command,
operable program or batch file.

C:\Users\My Name>

P.S.
My laptops a vista

I added a few things that might help get the answer
D-link
DI-624

Added a little more information to last thread

I added a little more information to the last thread so hopefully it's more likely understood and answerable.
Go to my last thread and see if it helps at all.

Sounds like your path is screwed up, so execute the above command first then try ipconfig.