Hi. on GGF18, there had been a discussion for primers. Unfortnately not much has been done in that area. As a starter, I've uploaded a PPT file which contains parts of material which Heiko and I used as a WS-Agreement Tutorial. Please find it on http://forge.gridforum.org/sf/go/doc14366?nav=1 BTW can someone please tell me how I can upload a new version of this PPT and create a version2 rather than create a new doc? Currently I can only find the Create button at. http://forge.gridforum.org/sf/docman/do/listDocuments/projects.graap-wg/docm an.root.tutorials If I move to ----- Toshiyuki Nakata 中田 登志之 Executive Chief Engineer, Central Research Lab. NEC 1753, Shimonumabe, Nakahara-Ku, Kawasaki,Kanagawa 211-8666,Japan Tel +81-44-431-7653 (NEC Internal 22-60035) Fax +81-44-431-7609 (NEC Internal 22-60509)