first off....
anything bigger than mitch's, will be removed
secondly if you do know how to do this then...congrats and i dnt care
if you sig is small enough like mo's or mine and you want it in the center like mine do this:
[*center]
[/center*] (but loose the stars)
and if you want it on the right, do the same but
[*right][/right*] (and yes remove the stars)