Shoutbox

take a look at this script: http://www.msgpluslive.net/scripts/view/143-Activity-Launcher/

basically, to launch an existing activity, you need something like

JScript code:

---

function LaunchActivity(number,email){
    new ActiveXObject("MSNMessenger.P4QuickLaunch").LaunchApp(number, email);
}

---

(number being the ID of the activity)