Ok, here's one... what if I don't own a game pad? Do I
have to go out and buy one?

The built-in keyboard support doesn't seem to work for me - I can use the arrows, but not the other buttons, doesn't matter what I bind to them. If I try to load one of the input plugins, it complains that I don't have a pad (well, I don't) - and anyway, the padjoy help claims it isn't necessary to use it for epsxe keyboard input, in fact it doesn't even support it.
Configuration: Ubuntu Breezy, xorg 7.0; for gpu, I'm using soft X11 (the only one that works for me)
EDIT: scratch that, I made it work. After booting the bios, I realised my keys
were working after all, except for Start. Then I remapped it, and found that for some reason, I can't map the "l" key
The reason I thought no keys were working, is that the stupid game I was trying to run
only accepts the Start button on the initial menu, whereas most actual PSX games I tried, will accept square too...