Problem: VRML export looks quite different because headlight is on by default
This problem is addressed in ArcGIS 8.1 Service Pack 1. See the Related Information section to download this pack.
If you export a scene to a VRML file and view it in a VRML browser, the shading may look very different.
ArcScene's export doesn't specify a setting for the VRML headlight. By default, the headlight is on. Scenes don't have headlights though, so they will display differently.
Solution or Workaround
Add the following to the exported VRML file: