For psp,do you need a special usb cable for it?

There are several usb cables that you can chose from

if you are just looking for a psp cable that will hook your psp to your computer to transfer data without charging it you could look for these:

http://ecx.images-amazon.com/images/I/410M4A1M25L....

if you want one that you can hook your psp up to your computer to transfer data and charge it at the same time look for a cable like this

http://ecx.images-amazon.com/images/I/4188ET5WXGL....

try looking at radio shack, a game store, wal-mart, target, best buy, or another electronic hardware store

It doesnt have to be made by sony, just compatible with a sony psp

I lost the usb cable I had for my psp (one with charger) and I been using the usb cable that my MP4 uses. they are the same thing but it doesn't charge.

Yes, you need a usb cable for your psp.