First, ask Nasm to create one with the "-l" switch and a filename:
nasm -f obj myfile.asm -l myfile.lst
Then you can view it with... whatever editor you made "myfile.asm" with, I guess. If you'd like to *not* list part of the file, you can use "[list -]" to disable listing, and "[list +]" to turn it back on. If you don't want to see Dr. Carter's macros in your list file, for example...
[/list][/list][list -]
%include "asm_io.inc"
[list +]
I guess that's about all there is to it... holler if you have trouble.
Best,
Frank