I need to change an icon on a third party style from a round silver circle to a massage hand, both in which I've included screenshots of. Can someone point me in the right direction, is this an easy thing to do, and being a noob is this an html thing? Below is what I'm referring to. Any and all advice would be great. I saw the tutorial by Jake Bunce on nodes, but didn't know for sure if that's what I need to have done.
I tried replacing the new image with the old image on my server using my FTP client, reformatted it to a png image and nothing happened. Do I need to rename it and/or is there a way of doing this using the extra css or CSS like you can with everything else?