1. Which postGis methods do I use for converting Lambert72 coordinates to WGS84 coordinates and vice-versa? 2. Does anybody know of a Java library that implements this conversion or which I can use to implement it? -- Guy Thomas guy.thomas at fks.be fks bvba - Formal and Knowledge Systems http://www.fks.be/ Stationsstraat 108 Tel: ++32-(0)11-21 49 11 B-3570 ALKEN Fax: ++32-(0)11-22 04 19