NIREUS S.A. would like to inform the public for the revision of the date of the conference call with local and foreign investors. The new date that the conference call will take place, will be on Monday, June 4, 2007 at 16:00 p.m. - GR time - for local investors, and at 17:00 p.m. - GR time - for English speaking investors (instead of Friday June 1, 2007).