PSO World has a guide to the menus. Hmm...Blue Burst was downloaded onto the computer with out paying. It doesn't say Episode IV though.
It's pretty much the same thing on xbox and gamecube but on pc, if you like those, youll like this. I'd get a gamepad though.
B/c it's not. PSO World, and Japanese Gaming, and Gamefaqs have all had info on downloading the freebee. i'm not sure about Episode IV. I've not really played since then.