ghOst
Rock Star
Silver Level
Here's a trick: uninstall flash from your computer and when you open the BETONLINE cash game and it asks you to install flash click NO.
This is a little better because now all you see is the cash game and a black background where the BlackJack table would normally be. What I do is i position the black background off my screen so all I see is the cash game. And there is no chance of you accidentally entering a blackjack game since the blackjack game requires flash to run
If you don't want to uninstall flash completely from your primary computer you can install a virtual machine on windows and install the betonline client in the virtual machine...then you can disable/uninstall flash in the virtual machine only.
i took a screenshot: