Flash mx beginner... movieclip manipulation question

hi everybody, this is my first post here, so plz be gentle. im a beginner at using flash mx actionscript with no previous programming experience.

im currently doing an animation where a movie clip moves from right to left using this code i found at the tutorials section:

onClipEvent(enterFrame) {
speed = 2;
this._x += speed;
}

now what i want to do is have the move clip stop moving when the user puts the mouse over it, but i dont know how to do that, plz help. :slight_smile:

xZeRox