Buying an external hard drive can be costly, but making one out of a disused PC will only cost $10 or $20. Place an old hard drive in an external hard drive case with help from a Web designer in this free video on computer tips. Expert: Noah Blumenthal Bio: Noah Blumenthal is a computer expert who worked as a Web designer at Netbuzz, an online Web design and advertising company in Paris, France. Filmmaker: Paul Volniansky