In port-i386 Deng Hongwei asks:
>I've download NetBSD-1.3-Release(i386) from ftp.netbsd.org,
>and installed it. But I can't find the 'adduser' command at all.

There isn't one.  The BSD Faq points you (or it used to) to my
portable one at:

	ftp://ftp.quick.com.au/pub/unix/adduser.sh

it should do what you want (the man page is in the comment at the start or 
you can see http://www.quick.com.au/cgi-bin/rtfm?topic=adduser.sh)

--sjg