[endgame]

I'm trying to replace my trophy png in the images file, but ran into a bit of a stumbling block. Thought I knew enough about Paintshop Pro or ifranview, but I can't seem to recall how to make a background transparent. Here's the image I'm working with, but can't get the white to vanish in-game.

If someone can do it, great, but I'm more than willing to be educated and do it myself, if I can as well. Thanks in advance.