You mean the sudden "teleportation"after you pressed the key to move the guy in the mc?

Well, easy: make an extra frame before the game really starts with only yhe character in it. Put a code in it where you say the X_position of the guy must be 200 (or any other) and also for the Y_position, so the character moves to that place... make sure these X and Y positions are... sorry, kinda vague... but try it out or mail me, I'll send ya a fla-example if I still find it on my pc.