Well i can deal with that later Im more interested in overcoming the hardware challenges right now, specifically in interfacting between parallel ATA and memory stick DUO.
I've seen many duo to USB adapters (card readers), but i need the opposite, a USB to duo, which would then plug into an iDE to usb adapter used in external hard drives and stuff. (I'm assuming those card readers don't work the opposite way)
Also powering the hard drive is an issue since it needs 5v and the psp battery is only 3.6v, but that's the easy part.