Vrmlexp.dle is for creating and exporting scenes in the VRML97 format. VRMLEXP exports .wrl files, which can be viewed in any VRML97 browser.
Make sure that you have the most current version of your VRML browser and check its documentation to insure that it supports VRML97.
To create VRML97 files:
Use the tools in the VRML97 Helpers to add actions and triggers and prepare the scene.
Choose File > Export and export the scene in the VRML97 format.
The VRML97 exporter supports the following:
Lights—All VRML97 light types: direct, omni, and spot.
Cameras—Free and targeted cameras.
Primitives—Sphere, cone, box, and cylinder primitive objects. These objects export as VRML97 primitive objects. This helps reduce the size of VRML97 files.
Animation—All position, rotation, and scale animation on objects, as well as animated hierarchies, inverse kinematics, and all controller types. Select Coordinate Interpolators in the Export dialog to export animated meshes, such as an animated Bend modifier or character studio Physique animations.