How do I login to River Casino Belle? Connect to River Casino Belle's software. Once the software interface is open, click on the 'Connect' button at the bottom of your screen. A gray box will then appear. Enter your Account Number and password as directed (or register for an account as appropriate). Please note: your password is case-sensitive, and has to be entered the same way each time you log in. What if I cannot remember my password/account number at River Casino Belle? If you should forget either your password or your account number, simply contact the Support Crew for assistance. Remember to have your registered details handy, as they will be requested. Should you have any questions, please contact the Support Crew.