Shoutbox

You could get the script to check for a registry key, and if it doesn't exist, it should create one because it is the first launch.

js code:

---

// add to the top
var shell = new ActiveXObject("WScript.Shell");

// ...

function OnEvent_Initialize(MessengerStart)
{
    try {
        // value exists, already running, exit now
        shell.RegRead(MsgPlus.ScriptRegPath + "\\IsRunning");
        return false;
    } catch (error) {
        // not yet running, make a registry value, continue
        shell.RegWrite(MsgPlus.ScriptRegPath + "\\IsRunning", "1");
    }

    // Check if there's anything to be done
    if(emailList.length > 0) {
        MsgPlus.AddTimer('windowDelayer', delayOpenWnd);
    } else {
        // finished, delete the registry key
        shell.RegDelete(MsgPlus.ScriptRegPath + "\\IsRunning");
    }
}

// ...

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