Trouble with moving movieclips

When I put my movieclip on the first frame of my site it looks clear but when I put the movieclip on frame 3 (with 2 blank keyframes in front) and add a stop(); to the frame it turn out really jaggedy edges… Does anyone know what could be going wrong here… Thanks

Mike

post the fla. You could use motion tween. Frame to frame action is what making it edgy