What usb do i need for my camera?

I have a Sony Digital Handycam dcr-trv145e-PAL and was wondering what usb I need to buy for the camera, considering it never came with one? If you know, It'd be great if you could give me a link to where you found the usb so i can purchase it? I have a load of lovely footage on my camera that i desperatly want to put online.