install it but it requires Java 5 (while I'm using Java 6), so I suppose it would need Gvsig to run on Java 5 to work. I've looked into the new Extension Manager utility, but the netowrk extension is not listed. In brief: what's the best way (if it's possible) to use the network extension in Gvsig 1.11? Thanks for the help, Giovanni [1] http://forge.osor.eu/frs/?group_id=201