I want to backup of my data. i heard about external hard disk that connect to USB port. Can anyone tell me which one to purchase. I want upto 40GB.

I live in India

I was looking into data recovery places and i came across this site. Does anyone with experience know how much it would be to recover just a few gigabytes (at most 2) Or are there any electronic stores that you know that provide this service? (Circuit City, Best Buy, etc.)

I need to recover data from a damaged SimpleTech external hard disk by the way.