Hi. I have a dell b130/pp21L. Got it very cheap but with no hard drive. What type/kind of HDD should I get? It has two 1g memory sticks in it. The little bit I know is from 40 to (I think ) 250-GB HDD are available. It's not needed for business, but I want to at least have it set up to work for a few years. What do ya'll think would be best? THANKS VERY MUCH!!!