Dear CME Globex Customers,

On Monday, February 27, 2006, the CME Auction Markets platform will be directly available to CME Globex users via the CME iLink 2.x interface.

With this launch, CME Globex customers will be able to trade CME Auction Markets products on the CME Globex platform via the CME iLink interface. Currently, access to the CME Auction Markets platform is limited to Web interfaces.

While there are no changes to CME market data message formats with this launch, market data messages generated by CME Auction Markets products may define or use existing fields differently. In addition, several new spread types will be listed to support CME Auction Markets products. Complete information on all CME Auction Markets market data messages differences is available online.

The CME Auction Markets products are currently available for testing in the CME certification environmnent.

CME Auction Markets ITC data will be disseminated on Channel 6 and RLC data will be available on Channel 17 on the CME Market Data Platform.

For more information on CME Economic Derivatives and the CME Auction Markets platform on the CME Globex platform, please see the CME Auction Markets Platform Client Impact Assessment.

Please contact Ryan McNally at 312.930.3157 or contact your CME Globex Account Manager at 312.634.8700 in North America or in Europe at +1.44.207.623.2550 with any questions on this CME Auction Markets platform launch.

Thank you,

CME