Netscape Communications Corp. named Eric Hahn chief technology officer, replacing co-founder Marc Andreessen, who took a new position as executive vice president of products. Hahn, 37, will be part of a new executive committee made up of four executive vice presidents and President and Chief Executive Jim Barksdale. As CTO, Hahn will continue to work with Andreessen in setting technology strategy and product direction for Netscape's line of Internet software. The move gives Mountain View-based Netscape a more seasoned executive in dealing with customers and plays to Andreessen's strength with products, as Netscape's business evolves to address the corporate market, analysts said. Netscape shares fell 94 cents to close at $38.94 on Nasdaq.