<A target="_blank" href="http://www.usatoday.com/tech/products/2009-01-19-netbooks-future_N.htm?csp=34">Netbooks, those pint-size laptops</A>, are making life difficult for Hewlett-Packard, Dell and Microsoft as they try to decide whether netbooks represent a new category of low-cost computers - or just a passing fad.