Mouse Follow: I've read the Tute

I have read the tutorial on this and am using the following code:

onClipEvent (load) {
_x = 78;
_y = 163;
speed = 5;
}
onClipEvent (enterFrame) {
endX = _root._xmouse;
endY = _root._ymouse;
_x += (endX-_x)/speed;
_y += (endY-_y)/speed;
}

My issue is this: I want the movie clip image (instance name: Check) to start at the location (X=78, Y=163) and not immediately “run” up to X=0, Y=0 when the movie loads. I just want it to hover in the middle of the movie until the cursor enters the image.

Thanks.

BTW: Great site.