Hmm, I just tried installing the current NEM on my RC x64 box and didn't have any install issues I recall (which I absolutely had on the beta). I even tested it via a basic windows VPN to a customer. The one thing I did not test was dial-up since I don't have a modem in my home PC, but it gave me enough hope that I seriously was thinking about redoing my laptop to 7 until I read this thread...
