[Help]ICON

hello epvp, i need help please, how can i make icon ? from .png
and how size is for swords,?
i have adobe photoshop cs5 , and when i try make icon i have white background
i need have it black , please can me help someone ?;)

Take an icon from the client and look what size it is.

You need an transparent background

and how make transparent background please ? :D

erase the background.

Why erase ? When he open a new Window with STRG+N he can change the backcround at the window sizes.

i got it. thanks