Simply sign-up again and your new password will override your old password once you confirm the confirmation email we sent you.
Smartervegas does not sell anything, we simply redirect you. You will need to contact whoever you made your reservations with.
This is usually the hotel itself or the official box office.
View hotel and show phone numbers.
Check your junk/spam folder. If you still don't see a confirmation e-mail try signing up again with a free e-mail account like Gmail, Hotmail or Yahoo.