Paris, May 2005 – Computer Sciences Corporation (NYSE: CSC), a leading global information technology (IT) services company, announced today that the French mutual company, Sud-Ouest Mutualité, has selected CSC's GraphTalk A.I.A to administer its portfolio of individual and group health and protection insurance products and support its services to the Mutual Insurance sector. The selection of GraphTalk A.I.A is part of a strategic overhaul of Sud Ouest Mutualité's technology environment launched by the company in 2004.

GraphTalk A.I.A administers individual and group investment, health and traditional life and pensions products. Together with CSC, Sud Ouest Mutualite will deploy GraphTalk A.I.A to all workstations across Sud Ouest Mutualite's management platform and agency network, which uses the company’s intranet. Furthermore, CSC will install GraphTalk A.I.A in an advanced technical infrastructure of high capacity server systems connected to optical-fibre storage systems for both production and back-up environments. This architecture will enable Sud Ouest Mutualité to use GraphTalk A.I.A in a secure environment that offers high-speed performance and extensible capacity.

“Among the major challenges we have to meet this year is improving the guarantees our products offer, which more than ever deal with the development of the social welfare system and its regulatory framework,” said Patrick Navarret, managing director of Sud Ouest Mutualite. “GraphTalk A.I.A.’s ability to support our wide range of products, which our company has been developing for several years, as well as its capability to adapt to improvements at any level, will provide us with a reliable and adaptable solution to face these new challenges.”

"We are pleased to provide our experience to Sud Ouest Mutualite and welcome them to our large customer base of mutual companies and GraphTalk A.I.A users," added Jean-Charles Miginiac, managing director of CSC’s Financial Services Group operations in France. "GraphTalk A.I.A has proved to deliver results to the mutuals sector and is a mature solution for the health and protection industry."

About CSC in Financial Services

CSC distinguishes itself through its time-tested ability to plan, build and operate highly reliable, efficient and secure business and IT solutions for leading financial services firms around the world. To complement its capabilities in consulting, systems integration and outsourcing, CSC brings financial services industry knowledge and experience, a comprehensive portfolio of financial services application software and an extensive network of industry and technology partners. CSC’s financial clients include more than 1,200 major banks, insurers and investment management and securities firms.

About CSC

Founded in 1959, Computer Sciences Corporation is a leading global information technology (IT) services company. CSC's mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 79,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC's own advanced capabilities. These include systems design and integration; IT and business process outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $14.1 billion from continuing operations for the 12 months ended April 1, 2005. For more information, visit the company's Web site at www.csc.com.