Woah, let's bring it down a notch?
The unfortunate fact remains, that if the drive won't see the disc, the command line won't work. Do you know if it's a drive fault or a Windows fault?
Looking at my disc, the command line should be:
Failing that, try:
They're the only two files in the Installl folder, so it should be one of those. Let us know if that works though, 'cos I'm intrigued by this disc-problem.