So, today i have a question-hour :P
I want that an object swing a bit:
(http://img202.imageshack.us/img202/1016/unbenanntxwt.png)
So what is your question? How to do this?
Well, it depends on whether the object is actually a line (search the manual for DrawLine and use sin/cos to calculate the coordinates) or a sprite (search for, if I remember correctly, RotateSprite).
To get a smooth swinging motion, use a sine wave to set the angle of rotation.