This is a short tutorial on how to give sprites a transparent background by using Gimp. Gimp is a free image editing program available for download at this site http://www.gimp.org/ After you learn the keyboard shortcuts and get used to the program this process should take less than a minute :)
note:
This is for after you've finished working on the sprite (recolored,spliced,or whatever).If you just randomly saw a sprite you liked you would have to add in the one color background in Paint then resize the canvas. If it's a picture, you have to render it,but that's not covered in this vid.