<PAGE>   1
                                                                    EXHIBIT 99.5
FOR IMMEDIATE RELEASE

                   MICROSOFT AND SUPERIOR CONSULTANT HOLDINGS
                 FORM ALLIANCE TO DELIVER END-TO-END ENTERPRISE
                       SOLUTIONS FOR HEALTH-CARE INDUSTRY

       HEALTH-CARE ORGANIZATIONS TO BENEFIT FROM INTEGRATED SOLUTIONS FOR
         E-COMMERCE, DATA WAREHOUSING, ENTERPRISE RESOURCE PLANNING AND
                            ENTERPRISE INFRASTRUCTURE

SOUTHFIELD, MICH., AND REDMOND, WASH. - MAY 6, 1999 - Superior Consultant
Holdings Corp. (Nasdaq "SUPC"), a leading provider of consulting, systems
integration, outsourcing and Internet solutions for the health-care industry,
and Microsoft Corp. today announced a strategic alliance to accelerate the
adoption of line-of-business health-care solutions, including e-commerce, data
warehousing, enterprise resource planning (ERP) and enterprise infrastructure
solutions based on the Microsoft(R) platform.

Microsoft and Superior will collaborate with clients and software vendors to
deliver integrated solutions quickly and cost-effectively. These solutions will
benefit hospitals, health plans, pharmaceutical companies, physician groups,
consumers and integrated delivery networks (IDNs). To develop and deliver these
new solutions, Superior and Microsoft plan to train and certify more than 500
consultants and open four client Solution Centers. In addition, Superior will
internally standardize on the Microsoft platform across 4,000 desktops and the
BackOffice(R) family of products over the next three years. This standardization
includes deployment of the Windows(R) 2000, Windows 98 and Windows 2000
Professional operating systems, Microsoft SQL Server(tm), Microsoft Site Server,
Office, Microsoft Internet Explorer and Microsoft Exchange for global messaging
and collaboration.

"The alliance between Microsoft and Superior Consultant Holdings is
representative of our commitment to the health-care industry," said Charles
Stevens, vice president of the Application Developers Customer Unit at
Microsoft. "Superior's comprehensive experience and knowledge of the health-care
industry will enable health-care customers to develop, optimize and deploy
solutions on the Microsoft platform. This alliance will create price and
performance advantages and improve business processes."

"Health-care organizations are demanding end-to-end enterprise solutions to help
them reduce expenses, improve clinical quality and customer service, and advance
their mission," said Richard D. Helppie, chairman and CEO of Superior. "From our
position as a known innovator in the health-care industry, we view this
relationship as a means to deliver a reliable, scalable IT infrastructure that
will help our clients meet their cost, quality and operational initiatives. In
addition, it will provide developers and health-care clients with the knowledge
and tools they need to build cost-effective solutions on the Microsoft
platform."

Skills Certification and Client Solution Centers Supporting the commitments in
the key customer segments of the alliance, Superior will build on its existing
cadre of certified developers and will train and certify a team of more than 500
Microsoft Certified Systems Engineers (MCSEs) and Microsoft Certified Solution
Developers (MCSDs). These trained consultants will be certified on Microsoft SQL
Server 7.0 and Site Server and will assist organizations in developing
commerce-enabled business applications. Superior will also open four Client
Solution Centers that will allow software developers, integrators and
health-care organizations to develop and test the scalability and performance of
the Microsoft platform and technologies such as ActiveX(R) for Healthcare. These
centers will be located in Seattle, Atlanta, Detroit and Los Angeles.
<PAGE>   2

ACTIVEX FOR HEALTHCARE
ActiveX is a multilevel standard designed to provide interoperability between
applications and systems across desktop PCs, servers, networks and legacy
systems. Using Microsoft ActiveX for Healthcare, Superior will enable clients
and software vendors to create solutions that plug and play. This architecture
will result in lower cost and more reliable interoperability.

LINE-OF-BUSINESS SOLUTIONS FOR HEALTH CARE
Microsoft and Superior will work together on the rollout of specific technology
and service solution packages based on the Microsoft platform in the following
areas:

*        Electronic commerce. Superior will deploy best-of-class e-commerce
         solutions, helping clients take advantage of the price and performance
         benefits of a secure Internet environment for business solutions.
         Health-care organizations will soon be able to deploy advanced
         architectures to create new e-commerce opportunities with their
         customers and partners.
*        Data warehousing. With significant resources and expertise in data
         warehousing, Superior will deploy an enterprise data warehouse
         architecture and tool set based on the Microsoft platform. These
         business intelligence solutions will help organizations optimize
         business and clinical decisions at the lowest possible cost while
         leveraging their existing IT investments. They will also allow
         organizations to fully utilize the speed, scalability and enterprise
         capabilities of Microsoft SQL Server 7.0.
*        ERP. Utilizing Superior's enterprise services, the Microsoft platform
         and additional third-party health-care products, Microsoft and Superior
         will deliver leading software vendor ERP solutions that include
         customer management, supply chain, fixed assets, payroll, and accounts
         receivable and payable applications. Microsoft, Superior and ERP
         vendors will collaborate to offer packaged solutions that can
         consistently be deployed in a client's business to achieve maximum
         results.
*        Enterprise infrastructure. Superior will create and deploy an
         integrated enterprise infrastructure based on the Microsoft platform.
         This infrastructure will provide enhanced productivity for thousands of
         health-care organizations. Within the next 36 months, Microsoft and
         Superior intend to reach more than 1 million unique users to deliver a
         scalable, reliable, cost-effective and common infrastructure.

"Together with Microsoft, our pledge is to work with health-care organizations
and leading software vendors to provide scalable, reliable solutions that are
cost-efficient and allow our clients to harness the power of the Internet,"
Helppie said.

ABOUT SUPERIOR CONSULTANT HOLDINGS
Superior Consultant Holdings is a national consulting firm comprising two
subsidiaries: Superior Consultant Company Inc. (established in 1984) offers a
full array of strategic, managerial, operational and technical services to all
segments of the health-care industry; and Enterprise Consulting Group
(established in 1993) extends its service offerings to clients across a wide
range of industries in the development, design, implementation and maintenance
of communications technologies, groupware and intranet and Internet information
systems and solutions.

ABOUT MICROSOFT
Founded in 1975, Microsoft (Nasdaq "MSFT") is the worldwide leader in software
for personal computers. The company offers a wide range of products and services
for business and personal use, each designed with the mission of making it
easier and more enjoyable for people to take advantage of the full power of
personal computing every day.

================================================================================


<PAGE>   3

Microsoft, BackOffice, Windows and ActiveX are either registered trademarks or
trademarks of Microsoft Corp. in the United States and/or other countries.

Other product and company names herein may be trademarks of their respective
owners.