It's not converting, it's emulating PSX images of the game. PSX emulation and ePSXe is nothing new to really talk about, and I'm absolutely sure that if you are providing the BIOS image and the PSX game's image file, you are doing something that is highly illegal. I don't care what you do in your own time (hell I have a large collection of them on my computer), but best not to post it on a forum.