Well if you want to make a real good fast action game you will require a fast scripting language ie. php3 or asp,the theory is simple the asp/php3 script is called via load variables or get url from within the flash movie and then the script adds the information to the database or text file,so all we do is send varaibles to the script and then they will be saved and ready for the other player(s) to retrieve the information and display it.