[intercooler3819]

$.get("test.pl",
  { getvar: "getvarvalue", secondgetvar: "ohmamthatsthesecondone" }, // here you are initializing the call and compiling it with the get parameters
  function(data){// in this part you are getting back the content of the http reseponse from the server and act in response
    alert("whats up, i have got this information: " + data); // for instance, popup, you can also it down:
    // $('#myhotid').html(data);
  }
)