I didn't check, but I assume the /p in
start /w notepad /p "%temp%\Listing"
means "print the file". To check yourself, open a command prompt and type notepad /? to see the help listing all switches. If you remove it, my guess is the file will just open.

But why not use Karen's directory printer from
http://www.karenware.com/
It's free and much more flexible? Far better than this very limited Microsoft suggestion.

Kees