i found cortona VRML Client v4.2 and installed,it solve my problem.It seem latest version cortona VRML Client doesn't support geovrml.
I got the same problem. I installed Cortona Client 5 and GeoVRML 1.0, JRE 6 but the screen got blank. Even if I used the lastest version : Cortona 3D. Can you send me Cortona VRML Client 4.2? By this way, which browsers and versions Cortona 4.2 work with? IE6, IE7, Firefox, Opera...
Thank you in advance. I really appreciate your help.