TietoEnator Corporation stock exchange announcement 23 October 2007 3:00 pm EET TietoEnator Corporation will publish its interim report for 1 January - 30 September 2007 at 8:00 am EET (7:00 am CET, 6:00 am UK time) on Friday 26 October 2007. Press conference for analysts and media will be held in Stockholm, Hotel Scandic Anglais, cabinet Birk, Humlegårdsgatan 23 at 9:30 am CET, (10:30 am EET, 8:30 am UK time). The conference will be hosted in English by Interim CEO Åke Plyhm, CFO Timo Salmela, EVP Communications and Investor Relations Reeta Kaukiainen and Investor Relations Manager Paula Liimatta. Notification of attendance to Therese Edehorn, therese.edehorn@tietoenator.com, tel. +46 10 481 3307. The conference will be webcast and published live on TietoEnator's website www.tietoenator.com/conferences and materials and there will be a possibility to present questions on-line. An on-demand video will be available after the conference. Conference call hosted by the management starting at 4:00 pm EET, (3:00 pm CET, 2:00 pm UK time) will also be available as live audio webcast on www.tietoenator.com/conferences and materials. Callers may access the conference directly at the following telephone numbers: US callers: +1 866 966 5335, non-US callers: +44 20 3023 4402, no code. Lines are to be reserved ten minutes before start of conference call. An on-demand audiocast of the conference will also be published on TietoEnator's website later during the day. A replay will be available until 2 November 2007 in the following numbers: US callers: +1 866 583 1035, non-US callers: +44 20 8196 1998, access code: 141833#. TietoEnator publishes financial information in English, Finnish and Swedish. All releases are posted in full on TietoEnator's website www.tietoenator.com as soon as they are published. For further information, please contact: Tanja Lounevirta, Director, Financial Communications, Communications and Investor Relations, TietoEnator, tel. +358 9 862 63122, +358 50 321 7510, tanja.lounevirta@tietoenator.com. TIETOENATOR CORPORATION DISTRIBUTION Helsinki Stock Exchange Stockholmsbörsen Principal Media