Viewpoint Digital has tapped Michael Lundberg prexy of the Utah-based company, which publishes a library of 3-D digital computer-graphics models for Hollywood f/x houses.

Lundberg replaces Martin Plaehn, who recently left the company to pursue other opportunities.

Lundberg, who has been with Viewpoint since 1998, was previously VP of marketing. Prior to joining Viewpoint, Lundberg was prexy of marketing and sales at CallWare Technologies and served as veep of Cambric Graphics.

Separately, Viewpoint, a subsidiary of Computer Associates Intl., tapped VP of product marketing John Mellor as VP of business development responsible for managing partner relationships. He will also facilitate e-commerce and visualization initiatives. One of Viewpoint’s founders, Mellor developed its marketing, customer service and publishing programs, as well as its CD encryption and delivery system.

Steve Wallock, previously director of field marketing, has been named veep of visualization solutions. He will join Mellor in defining the company’s 3-D visualization initiatives.

Chris Harrington, formerly sales director for the U.S. and Canada, has been tapped veep of sales. Prior to Viewpoint, he helped launch DirecTV and managed national sales operations.

Chris Grazioplene, previously director of marketing communications, has been named veep of marketing.