he's not boasting about a hack, he's saying windows is crap because it allows this to happen! so cut him some slack, eh?
i used to have a similar thing at an internet cafe i frequented. They had set it up so you couldn't get into "My Computer" so you couldn't open, for example, the hard drive or the floppy drive. Since i wanted to download stuff to floppies, i had to find a quick solution. The easy workaround is to open up "My Documents" (which is on the startbar...
and just tye in A: (or C: or whatever i suppose) in the explorer address field.
They obviously set it up to keep people from getting to the system files, but i thought this was fairly obvious to figure out. They could maybe have removed My Documents from the start manu, or set explorer not to display address bars (actually that's bullshit because you could still use iexplore to do the same thing, isn't browser integration great? <sarcasm>
but why should they have to remember all that fiddly crap?
Setting permissions would be the obvious sensible answer for an OS that has keeping its source code secret as its most powerful security feature...