I'm having trouble getting online here. Just gives me invalid username/password. I've edited the hosts file and no, it's not been changed back. I've tried creating a new profile, attempting to log in, switching back to my old profile and attempting to log in, all different combinations. I've tried using qtracker as the password, I've tried using what my password used to be, I've tried creating a new gamespy account (Not that I'd expect for that to work), I've tried requesting/resetting my password. Honestly the last part of the OP needs to be worded a lot better.
I just tried going through it as in the video demonstration (Creating a new account then just clicking "login"), and my game straight up crashed.