K-Meleon
In order to use Headlight Software's GetRight download manager with K-Meleon, just download the following plugin installer:
http://www.headlightinc.com/gr_plugin140.exe
Once downloaded, run the installer and when prompted select the plugin for Netscape 6.x / 7.x, and then point the installer towards the default K-Meleon plugins directory: (typically C:\Program Files\K-Meleon\plugins\). Also ensure that the option to catch clicks from within Netscape is selected as part of the GetRight configuration options.