Add Additional Features To A Flash Game

I already have a flash game source code and I need some extra features to be added onto the game..Also you have to integrate the game into my site.. 1, Multiplayer Feature For example , If a member of my site plays the game , it should calculate the score by the time taken + number of tries then add this score on a table .. When another member plays the game , it should match with this score and the member with highest score out of these two are selected as winner and will get some points added to their account using API .. That is one match (One match consist of two players) once the winner is selected, that table is cleared for the next player.... 2, There should be 4 levels on basis of a member's win/losses.. For eg : A beginner can play with another beginner instead of playing with an expert player..So a newbie wont have to face an experienced game player and will have decent winning chances.. 3,Few other small modifications which I will be telling you after the above features are implemented..