i have a question about poker?

Sounds like Five Card Draw -

Five card draw was the poker players game of choice before Texas Holdem took the poker world by storm. The idea is to make the best five card hand after one draw or substitution of cards that the player wants to discard. To view the rankings of poker hands, visit our hand rankings page at http://www.otkpoker.com/Hand-Rankings.html

Being a draw game it is played with blinds, with the player immediately to the left of the dealer posting the small blind, and the player next left posting the big blind. Each hand starts with players being dealt five hole cards. The first player to act, sitting on the left of the big blind, has the option of folding, calling or raising. This applies to each player in turn in a clockwise direction around the table until all players have acted.

With this first round of betting complete, there then follows a draw. Each player selects from his hand the cards he wishes to discard (if any) by clicking on them. You can change your mind by clicking on the card a second time.

As in the first betting round, this continues in a clockwise direction around the table. When the action reaches you, simply press the button to confirm you wish to discard the cards you have selected.

After all players remaining in the hand have completed their draws there is another round of betting, starting with the first player to the left of the button who has not folded their hand.

After the second betting round has been completed, the winner of the pot is determined in two ways: the player left after everyone else folds; or the player with the best hand. If more than one player has the same valued winning hand the pot is split equally between them with the suit of each hand having no bearing.

yes you can play with three people but a couple more is better. The game you are describing sounds like "draw poker" and there is 2 versions that I know of ,5 or 7 card draw,you bet or fold on the first lot of cards (5or7) then you usually only discard once in both games,you then bet or fold with the new cards and when the betting has finished with those cards the best hand wins.Reshuffle and deal a new hand.

theres different types of poker. the most popular by far being texas hold em'. i have a poker game on my fone though that sounds similar to what your talking about. i think its just a matter of discarding the cards you want and then getting more and then showing them. well thats what its like on my fone anyway. texas hold ems' so much better but a bit more complex i guess