Rich
Open your QBW and press Add Cmd, in there type your command
after you have done that if you press Advanced Settings your will see you command there. Both boxes are the same, the Add/Edit Cmd boxes are single line boxes where as the Advanced Setting Cmd box is a multi line box for complex scripting.

Everything is the same as the normal command prompt, except you cannot use
as it will open a new shell and your script will stop as it will be waiting for the new shell to close.