Viewing and/or converting raw images?

[Ridd]

Hiya. I'm trying to rip the sprites of a game that uses ARGB8 raw images. What program or utility should I use for this? I can load them with Irfanview and them save them as a different format such as PNG, but it doesn't seem to load the alpha channel transparencies for raw images correctly, so they end up with a black background.

Thank you!