Actionscript 1/2 need help with external swf preloader

Hi,

I would greatly appreciate if someone could tell me how I can preload external swf files to a main movie clip. I’ve seen many examples but I can’t figure it out. I have the following code:

bHow.onPress = function () {
mcContainer.loadMovie(“images/how.swf”);

}

bCover.onPress = function () {
mcContainer.loadMovie(“images/cover.swf”);
}

bWait.onPress = function () {
mcContainer.loadMovie(“images/wait.swf”);
}

Is it possible to create an preloader for the content being loaded to mcContainer on the main timeline instead of each individual swf? If so how can I do it? I’ve been searching the web for hours without any luck. Please help.