"asm for dummies" exactly doesn't exist, but here's something really good by Randy Hyde:
Art of Assembly
http://webster.cs.ucr.edu/AoA/Windows/index.html
Posted on 2004-02-29 05:23:52 by Ultrano
blumdude, go to www.madwizard.org (which was already mentioned in a previous post, I think), and get tutorials->win32asm basic tutorials. It's short, to-the-point and easy to follow, and should give you the basics needed for understanding 32bit assembly on windows.
Posted on 2004-02-29 08:43:48 by f0dder
commencing more reading....
Posted on 2004-02-29 15:16:17 by blumdude