The tutorial is not meant to cover every possible contingency, but to serve as a general guide for how to do the upgrade. Obviously there are differences in equipment (such as using a USB key instead of a floppy) that make following the steps exactly as I laid them out impossible.
I don't have any experience doing it using a USB key. I did every step in my tutorial exactly as I listed them, so I know it works... if I start rewriting it to include steps for other methods I'd feel the need to experiment with those methods myself, and frankly I just don't have the time or desire to do that right now.
So, even though I noted in the tutorial that it could be reposted as long as it wasn't modified, I'll now remove that "restriction." Anyone is welcome to use my tutorial as a basis for an updated tutorial with additional information from their own experiences, as long as the folks who are credited in the tutorial are still given credit. Maybe you could also correct some of the typos and grammatical errors...

i'm not going to edit your guide, as its your call if you want this info in there, but i have 2 suggestions of possible additions.
1. the thumb drive setup really is an easy solution if you did want to add it to the guide. what i did was take my bootable thumbdrive that iprep made when i flashed my dvd drive, and simply drag/dropped the hddhackr tool over (right in the root). when it said "do you accept the terms of use" on bootup, i simply said no, so that it would spit me out to dos and i could access the hddhackr tool
2. its worthwhile to mention the potential need to hex edit the hddhackr tool. you don't need to write up a guide for it, but maybe c/p the section from the readme on the subject. (my via chipset wasn't recognized by the tool, so i had to manually hex edit the program to get my drive flashed. it was simple, but not obvious, as every drive in my computer showed up EXCEPT my wd1600.)
even if this doesn't get added to the guide, its in the replies now, so hopefully someone will find this useful