Probably a pretty easy question...but I need help.

I've just started to learn flash and I have what is probably a pretty simple question for you guys. When I create a motion tween...even just a simple square moving from one side of the screen to the other, how do I get it to stop? I mean when I create it and then view it in my browser to see what it will look like when want to put it on a Web site it continuosly plays over and over again. Is there something simple I'm not doing to get it to stop after it runs through the motion the first time?

Any help is appreciated.

Thanks

well flash always plays everything as a loop. so what ur gonna need to do a lot while working with flash, is add the actionscript code:
stop();
on the frame that u want 2 stop. so if its frame 15, click on it then open ur actionscript editor and select that code off the side or type it in.