Excite@Home, a major broadband Internet access provider, has named Chris Hjelm to the newly created role of executive vice president for broadband network services. Hjelm, 39, will oversee the company's high-speed Internet network performance and other engineering, operational and technical issues. Hjelm previously served as chief executive of Zoho, an electronic procurement company. Excite@Home, which is in the midst of revising its corporate strategy, has announced several executive changes in recent months. The company also is working to bolster its network and e-mail performance.