I had trouble with installing Windows 7 on my Qosmio G35-AV600. I followed rpmstl steps and got windows 7 installed and running. Thanks for posting, it saved me alot of time!
It did take about 4 hours to run the Boot and Nuke software.
Since I had to do a clean install, my product key for Windows 7 upgrade would not work since it couldn't find the old licence. I went to the following website and found that option 3 solved this problem:
Clean Install Windows 7 With Upgrade Media and Product Key on Formatted or Empty Blank Hard Drive » My Digital Life