Everything in that guide before 'XBOX Xplorer 360 Xtreme' worked flawlessly for me, when I went to do the file transfer thing it seemed like it worked fine, but when I attempted to use those files I couldn't access them so I had to d/l everything again.
Not sure how I fucked it up, but it definitely was a LONG process of downloading shit because me and the wife are HUGE rockband fans.