Game hitTest problem

im running this code on flash 8 and i need help. im trying to track if my char touches a movie clip that is constantly being duplicated.
here is my code


canmove = true;
onEnterFrame=function(){
}
init = function () { 
width = 500; 
// pixels 
height = 400; 
// pixels 
max_snowsize = 5; 
// pixels 
snowflakes = 75; 
// quantity 
for (i=0; i<snowflakes; i++) { 
t = attachMovie("snow", "snow"+i, i); 
t._alpha = 20+Math.random()*60; 
t._x = -(width/2)+Math.random()*(1.5*width); 
t._y = -(height/2)+Math.random()*(1.5*height); 
t._xscale = t._yscale=50+Math.random()*(max_snowsize*10); 
t.k = 1+Math.random()*2; 
t.wind = -1.5+Math.random()*(1.4*3); 
t.onEnterFrame = mover; 
} 
}; 
mover = function() { 
this._y += this.k; 
this._x += this.wind; 
if (this._y>height+10) { 
this._y = -20; 
} 
if (this._x>width+20) { 
this._x = -(width/2)+Math.random()*(1.5*width); 
this._y = -20; 
} else if (this._x<-20) { 
this._x = -(width/2)+Math.random()*(1.5*width); 
this._y = -20; 
} 
} 
init(); 

what do I track for the char to hit?
i need canmove= false
as an effect