Hatboro, PA – March 2007 – The New Year means a new look for cpai.com, the official insurance programs website for the American Institute of Certified Public Accountants (AICPA). Originally designed to fulfill the professional and personal insurance needs of AICPA members, cpai.com has been revamped with the latest Internet technology to improve the overall user experience and deliver true, value-added benefits.

An important tool for both AICPA members and CPAs, cpai.com houses a wealth of information about the 14 insurance products offered through the Programs, coverage features and benefits, and risk management practices. “The site was relaunched to keep pace with the ever-changing needs of today’s CPAs and evolving Internet technology,” says Ken Mackunis, President of Aon Insurance Services, National Administrator for the AICPA Insurance Programs. “In-depth market research indicated that AICPA members use the site to fulfill a variety of insurance needs, including product research, purchase, policy renewal, and risk management assistance. By focusing on these key areas, we’ve been able to complete a redesign that enriches both form and function.”

As well as undergoing a complete aesthetic overhaul, cpai.com also underwent an architectural redesign. New enhancements afford simplified navigation, improve readability, and provide users with quick and easy access to targeted information. Additionally, technological upgrades increase Aon’s speed to market and give users the benefit of the timely delivery of new products and information. The culmination of these significant improvements moves cpai.com one step closer to becoming a full-service insurance marketplace for CPAs.

Aon and the AICPA invite members and CPAs to experience the new and improved cpai.com firsthand. Questions about site improvements or interface changes are welcome and can be directed to Aon at (800) 221-3023.

Ends

For more information contact:
Lynne MacMath
Vice President, Marketing
Financial Professionals Division
Aon Insurance Services
A division of Affinity Insurance Services, Inc.
159 East County Line Road
Hatboro, PA 19040-1218
Phone: (215) 773-1229
lynne_macmath@asg.aon.com
www.cpai.com

The AICPA Insurance Programs
Since the introduction of the first group insurance plan for members in 1947, the AICPA Insurance Programs have grown over five decades to meet the expanding insurance needs of members, their employees, and their families. Today, the AICPA Insurance Programs, with over 480,000 policies and certificates in force, offer one-stop shopping for members' professional and personal insurance needs. Each plan is continually monitored by the AICPA and its member committees to ensure that the insurance needs of plan participants are fully met. As member needs change, and new needs are identified, the AICPA Insurance Programs strive to deliver new and appropriate coverage.

About Aon
Aon Corporation (www.aon.com) is a leading provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting, and specialty insurance underwriting. There are 43,000 employees working in Aon’s 500 offices in more than 120 countries. Backed by broad resources, industry knowledge and technical expertise, Aon professionals help a wide range of clients develop effective risk management and workforce productivity solutions.

This press release contains certain statements related to future results, or states our intentions, beliefs and expectations or predictions for the future which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results depending on a variety of factors. Potential factors that could impact results include: general economic conditions in different countries in which we do business around the world, changes in global equity and fixed income markets that could affect the return on invested assets, fluctuations in exchange and interest rates that could influence revenue and expense, rating agency actions that could affect our ability to borrow funds, funding of our various pension plans, changes in the competitive environment, our ability to implement restructuring initiatives and other initiatives intended to yield cost savings, our ability to execute the stock repurchase program, our ability to obtain regulatory or legislative changes to permit continuous sales of our supplemental Medicare health product, changes in commercial property and casualty markets and commercial premium rates that could impact revenues, changes in revenues and earnings due to the elimination of contingent commissions, other uncertainties surrounding a new compensation model, the impact of investigations brought by state attorneys general, state insurance regulators, federal prosecutors, and federal regulators, the impact of class actions and individual lawsuits including client class actions, securities class actions, derivative actions, ERISA class actions, the impact of the analysis of practices relating to stock options, the cost of resolution of other contingent liabilities and loss contingencies, and the difference in ultimate paid claims in our underwriting companies from actuarial estimates. Further information concerning the Company and its business, including factors that potentially could materially affect the Company’s financial results, is contained in the Company’s filings with the Securities and Exchange Commission.

Al Orendorff | Aon Corporation
Corporate Communications | Director, US Public Relations
Tel: 312.381.3153 | Fax: 312.381.0144
Email: al_orendorff@aon.com