Dear Participants, The letters of invitation are available right now. We intend to deliver to Participants of GIS-IDEAS 2004 who need it. The invitation will be transferred as soon as you send e-mail us for request. Thank you very much for your collaboration. EISA Secretariat of GIS-IDEAS 2004 Department of Environmental Information Study and Analysis Institute of Geography, Vietnamese Academy of Science and Technology 18 Hoang Quoc Viet, Hanoi Tel: +84-04-756 2417 Fax: +84-04-836 1192