Go to download page and click DOWNLOAD.

Click Run. Or save the file to your computer and open it there.

Click Next.

Click I agree.

Select components to install. To install plugin for Opera Opera plugin must be selected. Click Next.

Choose the Destination Folder (default C:\Program Files\3dmlw\). Click Install to begin the installation.

Wait while 3dmlw plugin is being installed.

Click Finish.