[flash 8] please help to convert this

1

I want to make a raining effect in flash 8. I found a flash 5 file from internet. but it does not work in flash 8.
The code is
_root
[COLOR=SeaGreen]Frame 1 Code:[/COLOR]

dropcnt = 1;

[COLOR=SeaGreen]Frame 2 Code:[/COLOR]

dropbreed = int(random(2));
if (Number(dropbreed) == 1) {
    dropcnt = Number(dropcnt)+1;
    duplicateMovieClip("/all", "all" add dropcnt, dropcnt);
    setProperty("/all" add dropcnt, _x, random(400));
    setProperty("/all" add dropcnt, _y, Number((random(50)))+150);
}
if (Number(dropcnt)>500) {
    dropcnt = 1;
}

[COLOR=SeaGreen]Frame 3 code:[/COLOR]

gotoAndPlay(2);


movie clip named "all"

[COLOR=SeaGreen]frame 1 Code:[/COLOR]

delay = 1;

[COLOR=SeaGreen]Frame 15 code:[/COLOR]

riplcnt = 1;
ripltime = 1;

[COLOR=SeaGreen]Frame 16 Code:[/COLOR]

ripltime = Number(ripltime)+1;
breed = int(random(10));
if (Number(breed) == 1) {
    riplcnt = Number(riplcnt)+1;
    duplicateMovieClip("ripple", "ripple" add riplcnt, Number(riplcnt)+Number(/:dropcnt));
}
if (Number(ripltime)>=10) {
    gotoAndStop(18);
}

[COLOR=SeaGreen]
Frame 17 Code:[/COLOR]

gotoAndPlay(16);

[COLOR=SeaGreen]Frame 18 Code:[/COLOR]

delay = Number(delay)+1;

[COLOR=SeaGreen]Frame 19 Code:[/COLOR]

if (Number(delay)<30) {
    gotoAndPlay(18);
} else {
    gotoAndStop(20);
}

[COLOR=SeaGreen]Frame 20 Code:[/COLOR]

removeMovieClip("");
stop();

[SIZE=4][COLOR=Red]

[/COLOR][/SIZE][SIZE=4][COLOR=Red]if can please help me… to make a raining effect.C:-)[/COLOR][/SIZE]