Translating AS2 to AS3

Hi.
Below I have a bit of code that determines the bandwidth that a user has.  It is written in ActionScript 2.  The problem is that I am unfamiliar with AS2, and I wanted to use this in conjunction with a live streaming video player built in AS3.  I was wondering if anyone could give me the equivalent code in AS3, or if there's any way to tell flash that a portion of the code will be written in AS2.
Thank You,
Ari Amiri
nc = new NetConnection();
nc.onStatus = function(info) {
    trace("Level: "+info.level+" Code: "+info.code);
    if (info.code == "NetConnection.Connect.Success") {
        trace("--- connected to: " + this.uri);
nc.onBWDone = function(kbitDown, deltaDown, deltaTime, latency) {
    trace("onBWDone: kbitDown:"+kbitDown+" deltaDown:"+deltaDown+" deltaTime:"+deltaTime+" latency:"+latency);
    // app logic based on the bandwidth detected follows here
    detected_bw = kbitDown;
    // close the Netconnection to bwcheck
    this.close();
nc.onBWCheck = function() {
    trace("onBWCheck");
    return ++counter; // Serverside, just ignore any return value, For now return the call count
nc.connect("rtmp://216.18.231.42/bwcheck", true);
stop();

Thanks kglad. However, my preloader doesn't seem to work
quite properly. The graphic that I want to fill up as the movie
loads does not appear for a while, then suddenly fills up and just
sits there for a while until the movie is displayed. Do you know
why this might be?

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