Same scenerio as when I encountered 10 High Holdem Poker. I was wandering the tournament halls of English Harbour, and found they were running a freeroll for Casino Hold'em Poker. It's a house game, but they have house game tournaments set up in their system. And this particular one had no entry fee, so I figured it's as good a time to learn a new game as any.
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The game is played with a deck of 52 cards, no jokers involved. The best five card poker hand at the showdown wins.
GamePlay:
> The player and dealer are both dealt their hole cards
> A card is burned, and the flop is dealt
> Decision Point - a chance to either Fold, or Call
> Turn is dealt
> River card is dealt
There are three types of bets that a player can make in this game. The first is the ante, which gets the hand started. There is an Ante paytable on the screen. It shows what hands are winners, and how much they're worth.
The second bet is the bonus bet. There is a bonus paytable located right on the virtual table, so you can see what hands are paid, and how much you'll get for those.
The third, and final bet option is the Call. After you see the flop, you can either fold your hand, or call. Calling requires you to make a bet worth double the ante (a big bet, essentially). It also etitles you to see the turn and river cards dealt out.
At the end of the hand, if the player has a better hand than the dealer, he is paid for the Ante bet according to the Ante Paytable. He is also paid for the bonus bet accoding to the Bonus Paytable.

The Call bet is paid if the dealer has a "qualifying" hand. By qualifying, they mean a pair of 4's or higher. If the player wins, but the dealer's hand is say, King high, the Call bet is returned, not paid off.
The decision points in the game are what to bet before the cards are dealt, and then whether or not to call after the flop.
I think it's funny that they burn a card pre-flop. The idea of a burn is to keep people from knowing what the next card is, and that's not an issue online. Still, it's an interesting touch.