Dell said it would <A HREF="http://news.zdnet.com/2100-9595_22-6119119.html?tag=nl.r23660">hire an additional 500 engineers</A> for its product development operations in central Texas. Dell's development team in Texas is its largest, the company said. Hiring will begin immediately. The engineering hiring planned for the company's central Texas development operations is among the series of investments this year to enhance Dell's design, production and customer service capabilities.