Hello, Thank you Oliver for your help, and, if somebody looks for an Inventor - Vrml file converter, this can be found at the following location : http://www.etsimo.uniovi.es/pub/win95/www/vrml/ And I have three other questions : 1. When I close my 'MainFrame' window, my application finishes its work. If there are more 'MainFrame's open, and I close one of them, my application closes, too. Why ? How can I rewrite the WindowClose event ? 2. The Java3D transformations are the same as VRML transformations ? 3. Earlier I worked a bit with Open Inventor and I have some .iv files. But with the TGS's Webspace I cannot load them ( error message : invalid header). Only the example .iv files can be loaded. Why ? Thanks in advance! =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".