Movie clip delay?

Hi all, I have a one frame fla that controls the movie clips on stage through actionscript. When the swf starts to play all the movie clips move to their desired positions. I would like to know how to delay one of these movie clips for 2 seconds. The actionscript that control mc movement is located in the mc. Here is the code.

onClipEvent (enterFrame) {
xPullOutNavArea = getProperty(_root.PullOutNavArea, _x);
movePullOutNavArea = _root.xTargetPullOutNavArea - xPullOutNavArea;
setProperty(_root.PullOutNavArea, _x, xPullOutNavArea + (movePullOutNavArea/15));

Can I add a delay in here?