Help changing this IR sketch to RF

Projects Programming
35 
/*
  Simple example for receiving
  
  http://code.google.com/p/rc-switch/
*/

#include <RCSwitch.h>

int currentState = 0;

int RELAYSWITCH = 5; //Pin # that my relay's trigger/switching
                 //terminal is connected to

RCSwitch mySwitch;

void setup() {
  Serial.begin(9600);
  mySwitch.enableReceive(0);  // Receiver on inerrupt 0 => that is pin #2
  pinMode(RELAYSWITCH, OUTPUT); //setting relay switch pin as output
}

void loop() {
  if (mySwitch.available()) {
    
    int value = mySwitch.getReceivedValue();
    
    if (value == 5592323) {
      if(currentState == HIGH)
      currentState = LOW;
      else
      currentState = HIGH;
      //what do you mean use currentState somehow? It isn't
      //changing to show that it's a command or anything?
    }

    mySwitch.resetAvailable(); //What does this do???
  }
}

So how do I put that into this code? Do I put the unsigned long value bit before setup??

Also, at the end of the sketch what does the last line do "myswitch.resetavailable" ?