I finally finished downloading the beta bits late last night (5 large ISO files), and needless to say, the installation was less than trouble free. Unintuitively (and through a bit of trial and error), I realized that you have to unpack the ISO's into 2 seperate directories: 1 directory for the 2 VS.NET ISO's, and another one for the 3 MSDN library ISO's. The installer doesn't prompt to “insert” (in my case, mount via ISO mounter) the seperate discs, and I got errors that it couldn't...